{"id":36,"date":"2020-12-14T21:52:09","date_gmt":"2020-12-14T21:52:09","guid":{"rendered":"http:\/\/unionprocess.com\/?page_id=36"},"modified":"2024-03-12T16:50:55","modified_gmt":"2024-03-12T20:50:55","slug":"grinding-media","status":"publish","type":"page","link":"https:\/\/www.unionprocess.com\/grinding-media\/","title":{"rendered":"Grinding Media"},"content":{"rendered":"\n
Grinding media, the objects used to refine material and reduce particle size, are available in a wide range of shapes, sizes and materials to meet an equally wide range of grinding and milling needs.<\/p>\n\n\n\n
As the developer and manufacturer of industry-leading particle size reduction equipment, including Attritors (internally agitated ball mills) and DMQX horizontal media mills, Union Process is uniquely positioned to help you identify and source the correct grinding media for your application.<\/p>\n\n\n\n
Union Process customers know they can rely on our extensive technical expertise and years of experience to ensure they get the right grinding media at the right time and the right price for their specific needs. Working in close consultation with our customers, our skilled technical service representatives review customer requirements like final particle size, physical compatibility and contamination concerns and then recommend media with the right characteristics, including:<\/p>\n\n\n\n
balls, beads and satellites satisfy the bulk of our customers\u2019 requirements, but we also source highly specialized shapes like ballcones and diagonals<\/p>\n<\/div>\n\n\n\n
depending on the material, ranging from 0.05 mm to 2 mm for small media mills, up to 1\/8\u201d to 1\u201d for traditional Attritors and up to \u00bd\u201d to 2\u201d for ball mills<\/p>\n<\/div>\n\n\n\n
metallic grinding media<\/a> like carbon steel, forged steel, stainless steel or chrome steel grinding balls are best for some applications, while others require non-metallic media<\/a> made of alumina, ceramics, glass, silicon carbide, zirconium oxide or other specialized materials <\/p>\n<\/div>\n<\/div>\n\n\n\n\nRequest a Quote<\/a><\/div>\n\n\n\nGrinding Media Literature (PDF)<\/a><\/div>\n<\/div>\n\n\n\nUnion Process is the source for the most up-to-date information on grinding balls and other media. Download our Grinding Media Literature (PDF)<\/a> to view a detailed sheet, outlining factors to consider when selecting grinding media, along with specifications on the most common types of media.<\/em><\/p>\n\n\n\n\n\n\n\nOffering the optimal combination of grinding media knowledge and manufacturing expertise, Union Process takes your entire operation into account to identify the best grinding media to consistently generate the final particle size and shape required by your application, optimizing the cost effectiveness of your process and extending the life of your mills.<\/p>\n\n\n\nBacked by our long-standing commitment to customer satisfaction, we ensure quality manufacturing and reliable supply of grinding balls and media specifically engineered to meet the requirements of your most demanding milling applications.<\/p>\n\n\n\nScroll down to view our full line of grinding media; for immediate technical assistance, call (330) 929-3333.<\/p>\n\n\n\n\n<\/iframe>\n<\/div><\/figure>\n\n\n\n\n\n\n\nMetallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nThrough-Hardened Carbon Steel Balls Type 1065<\/h4>\n\n\n\nThrough-Hardened Carbon Steel Balls are magnetic and can be used in the food industry along with 440C stainless steel media. They are a low-cost media that are superior and recommended over case-hardened carbon steel media which have a soft core. They are packaged with no oil finish\u2014always dry packed\u2014as they will rust in water.<\/p>\n\n\n\n\n(SAE 1065\u2013through-hardened)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201362<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 1\/8″, 3\/16″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nChrome Steel Balls Type 52100<\/h4>\n\n\n\nChrome Balls (steel type 52100) are through-hardened and tempered steel balls designed to achieve maximum strength and quality. Ball hardness is in the 60\u201367 HRC range. They wear better than 440C stainless steel and through-hardened carbon steel. They are also recommended for applications where a through-hardened steel ball is needed in larger sizes (\u00bd” and larger). They are sometimes packaged with a very light oil finish to reduce rust due to humidity.<\/p>\n\n\n\n\n(SAE 52100)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201367<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1mm,<\/span> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\n440C Stainless Steel Balls<\/h4>\n\n\n\n440C Stainless Steel Balls are through-hardened and tempered throughout for maximum strength and quality. They are magnetic, and corrosion-resistant (generally rust-resistant). They are recommended for food applications and lighter colored slurries.<\/p>\n\n\n\n\n(AISI 440-C)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 58\u201365<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nCarbon Steel Shot<\/h4>\n\n\n\nCarbon Steel Shot media is through-hardened and very low cost. As such, they are not uniformly spherical and often can leave a gritty black residue.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 7.6<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 55\u201360<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> .25mm, .50mm, .6mm,.71mm, .85mm, 1mm, 1.18mm, 1.40mm, 1.70mm, 2mm<\/span>, 2.36mm, 2.80mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nForged Steel Balls (Large Diameter)<\/h4>\n\n\n\nForged Steel Balls are used for gold mining, cement factories, oil processing and large scale industrial applications. They are made by machine (standard) sizes 20mm\u201375mm. They are manually made (hit by air hammer) sizes 75mm\u2013125mm. They have hardness 55\u201363 HRC. All forged balls are through-hardened, and shipped in 55-gallon steel drums. They range in sizes from 20mm\u2013125mm. Standard lead time is 6\u20138 weeks FOB Akron, Ohio USA.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> 55\u201363HRC<\/li>\n\n\n\nRelative Cost:<\/strong> Very Low<\/li>\n\n\n\nSizes Available:<\/strong> 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 65mm, 75mm, 90mm, 100mm, 125mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n\nHow To Select Grinding Media<\/a><\/div>\n<\/div>\n\n\n\n\n\n\n\nNon-Metallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Balls and Satellites<\/h4>\n\n\n\nUnion Process is the one source for 90%, 94%, 99.5% and 99.9% alumina media. 90% alumina is available in satellites and rod\/cylinders. 94% alumina balls have excellent wear resistance with higher impact strength to save running costs with less contamination. They have great wear rate generally better than 90% or 99.5%. 99.5% alumina balls have the highest alumina content for a moderate price. The .5% impurity is MgO that is added to inhibit grain growth during sintering in the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls are made of very pure and reactive (expensive) raw materials. They are for high purity alumina applications where contamination is a factor.<\/p>\n<\/div>\n\n\n\n\nALUMINA 99.9% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.9<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1800<\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong> 1mm, 2mm<\/span>, 3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.5% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.8<\/li>\n\n\n\nHardness:<\/strong> Hv 1300 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.2mm, 0.3mm, 0.5mm, 1mm, 2mm<\/span>, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.8% SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4-3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 78 \u2013 79<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\nALUMINA 94% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.59<\/li>\n\n\n\nHardness:<\/strong> Hv 1200 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.5mm, 1mm, 2mm<\/span>, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 90% BEADS AND SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4 – 3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 75<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 3mm, 7\/32″, 1\/4″, 3\/8″, 1\/2″<\/li>\n\n\n\nNote: 3mm size are Beads-remaining four sizes are satellites<\/em><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Beads<\/h4>\n\n\n\nAlumina Beads are specially formulated to be used in high-energy mills in which a high degree of fineness is required. They are used in various industrial fields such as inks, paints, advanced ceramics, mining, cosmetics and pharmaceutical industries. They are a perfectly spherical shape with high mechanical properties and high wear resistance at a moderate price.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> Mohs 9, VICKERS (0.5 kg) 1200 \u00b1 50<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.34mm, 0.34\u20130.44mm, 0.4\u20130.6mm, 0.8\u20131.2mm, 1.2\u20131.6mm, 1.4\u20131.6mm, 1.6\u20131.8mm, 1.8\u20132.0mm<\/span>, 2.0\u20132.5mm, 2.5\u20133.0mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nGlass Beads<\/h4>\n\n\n\nThis grade is used for milling applications with 85% roundness. All Glass Beads are lead-free and less expensive.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 2.5<\/li>\n\n\n\nHardness:<\/strong> KNOOP 515 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.50mm, 0.40\u20130.60mm, 0.6\u20130.8mm, 0.75\u20131.0mm, 0.80\u20131.0mm, 1mm, 1.5mm, 1.0\u20131.25mm, 1.25\u20131.55mm, 1.55\u20131.85mm, 1.7\u20132.0mm, 2mm<\/span>, 2.0\u20132.4mm, 2.4\u20132.9mm, 2.85\u20133.45mm, 3mm, 3.5mm, 3.6\u20134.1mm, 3.8\u20134.1mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nSilicon Carbide Balls<\/h4>\n\n\n\nSilicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination. They are only available in 5mm,10mm, 15mm and 20mm sizes. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.1<\/li>\n\n\n\nHardness:<\/strong> KNOOP 2500 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 5mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nSilicon Nitride Balls<\/h4>\n\n\n\nSilicon Nitride Balls are very high-cost grinding media that are used for milling same materials (silicon nitride ball to mill silicon nitride materials) to avoid contamination. They are now available in 2mm and 3mm and sizes up to 25mm. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.2<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1300<\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 2mm, <\/span>3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/span><\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nTungsten Carbide Satellites\/Balls<\/h4>\n\n\n\nTungsten Carbide media is the hardest and densest (highest specific gravity) media and is available in both satellites and balls upon request. They are available in sizes ranging from 3\/32″ to 1″ in diameter. They are a high-cost media and are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 14.4-14.8<\/li>\n\n\n\nHardness:<\/strong> 92.0 \u00b1 0.5 Hra<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate to High<\/li>\n\n\n\nSizes Available:<\/strong>3\/32″, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 9\/32″, 5\/16″, 3\/8″, 7\/16″, 1\/2″, 9\/16″, 3\/4″, 1″<\/span>\n\nNote: Smaller sizes beginning at\u00a0<\/em><\/span>0.5mm<\/span><\/em>\u00a0available upon request.<\/em><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nZirconium Oxide Balls<\/h4>\n\n\n\nYTTRIA Stabilized, High purity 95% ZrO2<\/sub><\/p>\n\n\n\nZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n\n95% Beads<\/strong><\/em><\/li>\n\n\n\nSpecific Gravity:<\/strong> 6.0<\/li>\n\n\n\nHardness:<\/strong> Hv 1150 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong>0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.65mm, 0.8mm, 1mm, 1.25mm, 1.5mm, 2mm<\/span>,\u00a03mm, 5mm, 6mm, 8mm, 10mm, 15mm, 20mm, 25mm\n
Union Process is the source for the most up-to-date information on grinding balls and other media. Download our Grinding Media Literature (PDF)<\/a> to view a detailed sheet, outlining factors to consider when selecting grinding media, along with specifications on the most common types of media.<\/em><\/p>\n\n\n\n\n\n\n\nOffering the optimal combination of grinding media knowledge and manufacturing expertise, Union Process takes your entire operation into account to identify the best grinding media to consistently generate the final particle size and shape required by your application, optimizing the cost effectiveness of your process and extending the life of your mills.<\/p>\n\n\n\nBacked by our long-standing commitment to customer satisfaction, we ensure quality manufacturing and reliable supply of grinding balls and media specifically engineered to meet the requirements of your most demanding milling applications.<\/p>\n\n\n\nScroll down to view our full line of grinding media; for immediate technical assistance, call (330) 929-3333.<\/p>\n\n\n\n\n<\/iframe>\n<\/div><\/figure>\n\n\n\n\n\n\n\nMetallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nThrough-Hardened Carbon Steel Balls Type 1065<\/h4>\n\n\n\nThrough-Hardened Carbon Steel Balls are magnetic and can be used in the food industry along with 440C stainless steel media. They are a low-cost media that are superior and recommended over case-hardened carbon steel media which have a soft core. They are packaged with no oil finish\u2014always dry packed\u2014as they will rust in water.<\/p>\n\n\n\n\n(SAE 1065\u2013through-hardened)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201362<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 1\/8″, 3\/16″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nChrome Steel Balls Type 52100<\/h4>\n\n\n\nChrome Balls (steel type 52100) are through-hardened and tempered steel balls designed to achieve maximum strength and quality. Ball hardness is in the 60\u201367 HRC range. They wear better than 440C stainless steel and through-hardened carbon steel. They are also recommended for applications where a through-hardened steel ball is needed in larger sizes (\u00bd” and larger). They are sometimes packaged with a very light oil finish to reduce rust due to humidity.<\/p>\n\n\n\n\n(SAE 52100)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201367<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1mm,<\/span> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\n440C Stainless Steel Balls<\/h4>\n\n\n\n440C Stainless Steel Balls are through-hardened and tempered throughout for maximum strength and quality. They are magnetic, and corrosion-resistant (generally rust-resistant). They are recommended for food applications and lighter colored slurries.<\/p>\n\n\n\n\n(AISI 440-C)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 58\u201365<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nCarbon Steel Shot<\/h4>\n\n\n\nCarbon Steel Shot media is through-hardened and very low cost. As such, they are not uniformly spherical and often can leave a gritty black residue.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 7.6<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 55\u201360<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> .25mm, .50mm, .6mm,.71mm, .85mm, 1mm, 1.18mm, 1.40mm, 1.70mm, 2mm<\/span>, 2.36mm, 2.80mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nForged Steel Balls (Large Diameter)<\/h4>\n\n\n\nForged Steel Balls are used for gold mining, cement factories, oil processing and large scale industrial applications. They are made by machine (standard) sizes 20mm\u201375mm. They are manually made (hit by air hammer) sizes 75mm\u2013125mm. They have hardness 55\u201363 HRC. All forged balls are through-hardened, and shipped in 55-gallon steel drums. They range in sizes from 20mm\u2013125mm. Standard lead time is 6\u20138 weeks FOB Akron, Ohio USA.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> 55\u201363HRC<\/li>\n\n\n\nRelative Cost:<\/strong> Very Low<\/li>\n\n\n\nSizes Available:<\/strong> 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 65mm, 75mm, 90mm, 100mm, 125mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n\nHow To Select Grinding Media<\/a><\/div>\n<\/div>\n\n\n\n\n\n\n\nNon-Metallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Balls and Satellites<\/h4>\n\n\n\nUnion Process is the one source for 90%, 94%, 99.5% and 99.9% alumina media. 90% alumina is available in satellites and rod\/cylinders. 94% alumina balls have excellent wear resistance with higher impact strength to save running costs with less contamination. They have great wear rate generally better than 90% or 99.5%. 99.5% alumina balls have the highest alumina content for a moderate price. The .5% impurity is MgO that is added to inhibit grain growth during sintering in the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls are made of very pure and reactive (expensive) raw materials. They are for high purity alumina applications where contamination is a factor.<\/p>\n<\/div>\n\n\n\n\nALUMINA 99.9% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.9<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1800<\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong> 1mm, 2mm<\/span>, 3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.5% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.8<\/li>\n\n\n\nHardness:<\/strong> Hv 1300 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.2mm, 0.3mm, 0.5mm, 1mm, 2mm<\/span>, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.8% SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4-3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 78 \u2013 79<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\nALUMINA 94% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.59<\/li>\n\n\n\nHardness:<\/strong> Hv 1200 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.5mm, 1mm, 2mm<\/span>, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 90% BEADS AND SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4 – 3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 75<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 3mm, 7\/32″, 1\/4″, 3\/8″, 1\/2″<\/li>\n\n\n\nNote: 3mm size are Beads-remaining four sizes are satellites<\/em><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Beads<\/h4>\n\n\n\nAlumina Beads are specially formulated to be used in high-energy mills in which a high degree of fineness is required. They are used in various industrial fields such as inks, paints, advanced ceramics, mining, cosmetics and pharmaceutical industries. They are a perfectly spherical shape with high mechanical properties and high wear resistance at a moderate price.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> Mohs 9, VICKERS (0.5 kg) 1200 \u00b1 50<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.34mm, 0.34\u20130.44mm, 0.4\u20130.6mm, 0.8\u20131.2mm, 1.2\u20131.6mm, 1.4\u20131.6mm, 1.6\u20131.8mm, 1.8\u20132.0mm<\/span>, 2.0\u20132.5mm, 2.5\u20133.0mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nGlass Beads<\/h4>\n\n\n\nThis grade is used for milling applications with 85% roundness. All Glass Beads are lead-free and less expensive.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 2.5<\/li>\n\n\n\nHardness:<\/strong> KNOOP 515 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.50mm, 0.40\u20130.60mm, 0.6\u20130.8mm, 0.75\u20131.0mm, 0.80\u20131.0mm, 1mm, 1.5mm, 1.0\u20131.25mm, 1.25\u20131.55mm, 1.55\u20131.85mm, 1.7\u20132.0mm, 2mm<\/span>, 2.0\u20132.4mm, 2.4\u20132.9mm, 2.85\u20133.45mm, 3mm, 3.5mm, 3.6\u20134.1mm, 3.8\u20134.1mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nSilicon Carbide Balls<\/h4>\n\n\n\nSilicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination. They are only available in 5mm,10mm, 15mm and 20mm sizes. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.1<\/li>\n\n\n\nHardness:<\/strong> KNOOP 2500 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 5mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nSilicon Nitride Balls<\/h4>\n\n\n\nSilicon Nitride Balls are very high-cost grinding media that are used for milling same materials (silicon nitride ball to mill silicon nitride materials) to avoid contamination. They are now available in 2mm and 3mm and sizes up to 25mm. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.2<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1300<\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 2mm, <\/span>3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/span><\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nTungsten Carbide Satellites\/Balls<\/h4>\n\n\n\nTungsten Carbide media is the hardest and densest (highest specific gravity) media and is available in both satellites and balls upon request. They are available in sizes ranging from 3\/32″ to 1″ in diameter. They are a high-cost media and are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 14.4-14.8<\/li>\n\n\n\nHardness:<\/strong> 92.0 \u00b1 0.5 Hra<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate to High<\/li>\n\n\n\nSizes Available:<\/strong>3\/32″, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 9\/32″, 5\/16″, 3\/8″, 7\/16″, 1\/2″, 9\/16″, 3\/4″, 1″<\/span>\n\nNote: Smaller sizes beginning at\u00a0<\/em><\/span>0.5mm<\/span><\/em>\u00a0available upon request.<\/em><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nZirconium Oxide Balls<\/h4>\n\n\n\nYTTRIA Stabilized, High purity 95% ZrO2<\/sub><\/p>\n\n\n\nZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n\n95% Beads<\/strong><\/em><\/li>\n\n\n\nSpecific Gravity:<\/strong> 6.0<\/li>\n\n\n\nHardness:<\/strong> Hv 1150 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong>0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.65mm, 0.8mm, 1mm, 1.25mm, 1.5mm, 2mm<\/span>,\u00a03mm, 5mm, 6mm, 8mm, 10mm, 15mm, 20mm, 25mm\n
Offering the optimal combination of grinding media knowledge and manufacturing expertise, Union Process takes your entire operation into account to identify the best grinding media to consistently generate the final particle size and shape required by your application, optimizing the cost effectiveness of your process and extending the life of your mills.<\/p>\n\n\n\n
Backed by our long-standing commitment to customer satisfaction, we ensure quality manufacturing and reliable supply of grinding balls and media specifically engineered to meet the requirements of your most demanding milling applications.<\/p>\n\n\n\n
Scroll down to view our full line of grinding media; for immediate technical assistance, call (330) 929-3333.<\/p>\n\n\n\n\n<\/iframe>\n<\/div><\/figure>\n\n\n\n\n\n\n\nMetallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nThrough-Hardened Carbon Steel Balls Type 1065<\/h4>\n\n\n\nThrough-Hardened Carbon Steel Balls are magnetic and can be used in the food industry along with 440C stainless steel media. They are a low-cost media that are superior and recommended over case-hardened carbon steel media which have a soft core. They are packaged with no oil finish\u2014always dry packed\u2014as they will rust in water.<\/p>\n\n\n\n\n(SAE 1065\u2013through-hardened)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201362<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 1\/8″, 3\/16″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nChrome Steel Balls Type 52100<\/h4>\n\n\n\nChrome Balls (steel type 52100) are through-hardened and tempered steel balls designed to achieve maximum strength and quality. Ball hardness is in the 60\u201367 HRC range. They wear better than 440C stainless steel and through-hardened carbon steel. They are also recommended for applications where a through-hardened steel ball is needed in larger sizes (\u00bd” and larger). They are sometimes packaged with a very light oil finish to reduce rust due to humidity.<\/p>\n\n\n\n\n(SAE 52100)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201367<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1mm,<\/span> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\n440C Stainless Steel Balls<\/h4>\n\n\n\n440C Stainless Steel Balls are through-hardened and tempered throughout for maximum strength and quality. They are magnetic, and corrosion-resistant (generally rust-resistant). They are recommended for food applications and lighter colored slurries.<\/p>\n\n\n\n\n(AISI 440-C)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 58\u201365<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nCarbon Steel Shot<\/h4>\n\n\n\nCarbon Steel Shot media is through-hardened and very low cost. As such, they are not uniformly spherical and often can leave a gritty black residue.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 7.6<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 55\u201360<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> .25mm, .50mm, .6mm,.71mm, .85mm, 1mm, 1.18mm, 1.40mm, 1.70mm, 2mm<\/span>, 2.36mm, 2.80mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nForged Steel Balls (Large Diameter)<\/h4>\n\n\n\nForged Steel Balls are used for gold mining, cement factories, oil processing and large scale industrial applications. They are made by machine (standard) sizes 20mm\u201375mm. They are manually made (hit by air hammer) sizes 75mm\u2013125mm. They have hardness 55\u201363 HRC. All forged balls are through-hardened, and shipped in 55-gallon steel drums. They range in sizes from 20mm\u2013125mm. Standard lead time is 6\u20138 weeks FOB Akron, Ohio USA.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> 55\u201363HRC<\/li>\n\n\n\nRelative Cost:<\/strong> Very Low<\/li>\n\n\n\nSizes Available:<\/strong> 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 65mm, 75mm, 90mm, 100mm, 125mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n\nHow To Select Grinding Media<\/a><\/div>\n<\/div>\n\n\n\n\n\n\n\nNon-Metallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Balls and Satellites<\/h4>\n\n\n\nUnion Process is the one source for 90%, 94%, 99.5% and 99.9% alumina media. 90% alumina is available in satellites and rod\/cylinders. 94% alumina balls have excellent wear resistance with higher impact strength to save running costs with less contamination. They have great wear rate generally better than 90% or 99.5%. 99.5% alumina balls have the highest alumina content for a moderate price. The .5% impurity is MgO that is added to inhibit grain growth during sintering in the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls are made of very pure and reactive (expensive) raw materials. They are for high purity alumina applications where contamination is a factor.<\/p>\n<\/div>\n\n\n\n\nALUMINA 99.9% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.9<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1800<\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong> 1mm, 2mm<\/span>, 3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.5% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.8<\/li>\n\n\n\nHardness:<\/strong> Hv 1300 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.2mm, 0.3mm, 0.5mm, 1mm, 2mm<\/span>, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.8% SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4-3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 78 \u2013 79<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\nALUMINA 94% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.59<\/li>\n\n\n\nHardness:<\/strong> Hv 1200 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.5mm, 1mm, 2mm<\/span>, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 90% BEADS AND SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4 – 3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 75<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 3mm, 7\/32″, 1\/4″, 3\/8″, 1\/2″<\/li>\n\n\n\nNote: 3mm size are Beads-remaining four sizes are satellites<\/em><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Beads<\/h4>\n\n\n\nAlumina Beads are specially formulated to be used in high-energy mills in which a high degree of fineness is required. They are used in various industrial fields such as inks, paints, advanced ceramics, mining, cosmetics and pharmaceutical industries. They are a perfectly spherical shape with high mechanical properties and high wear resistance at a moderate price.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> Mohs 9, VICKERS (0.5 kg) 1200 \u00b1 50<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.34mm, 0.34\u20130.44mm, 0.4\u20130.6mm, 0.8\u20131.2mm, 1.2\u20131.6mm, 1.4\u20131.6mm, 1.6\u20131.8mm, 1.8\u20132.0mm<\/span>, 2.0\u20132.5mm, 2.5\u20133.0mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nGlass Beads<\/h4>\n\n\n\nThis grade is used for milling applications with 85% roundness. All Glass Beads are lead-free and less expensive.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 2.5<\/li>\n\n\n\nHardness:<\/strong> KNOOP 515 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.50mm, 0.40\u20130.60mm, 0.6\u20130.8mm, 0.75\u20131.0mm, 0.80\u20131.0mm, 1mm, 1.5mm, 1.0\u20131.25mm, 1.25\u20131.55mm, 1.55\u20131.85mm, 1.7\u20132.0mm, 2mm<\/span>, 2.0\u20132.4mm, 2.4\u20132.9mm, 2.85\u20133.45mm, 3mm, 3.5mm, 3.6\u20134.1mm, 3.8\u20134.1mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nSilicon Carbide Balls<\/h4>\n\n\n\nSilicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination. They are only available in 5mm,10mm, 15mm and 20mm sizes. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.1<\/li>\n\n\n\nHardness:<\/strong> KNOOP 2500 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 5mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nSilicon Nitride Balls<\/h4>\n\n\n\nSilicon Nitride Balls are very high-cost grinding media that are used for milling same materials (silicon nitride ball to mill silicon nitride materials) to avoid contamination. They are now available in 2mm and 3mm and sizes up to 25mm. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.2<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1300<\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 2mm, <\/span>3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/span><\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nTungsten Carbide Satellites\/Balls<\/h4>\n\n\n\nTungsten Carbide media is the hardest and densest (highest specific gravity) media and is available in both satellites and balls upon request. They are available in sizes ranging from 3\/32″ to 1″ in diameter. They are a high-cost media and are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 14.4-14.8<\/li>\n\n\n\nHardness:<\/strong> 92.0 \u00b1 0.5 Hra<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate to High<\/li>\n\n\n\nSizes Available:<\/strong>3\/32″, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 9\/32″, 5\/16″, 3\/8″, 7\/16″, 1\/2″, 9\/16″, 3\/4″, 1″<\/span>\n\nNote: Smaller sizes beginning at\u00a0<\/em><\/span>0.5mm<\/span><\/em>\u00a0available upon request.<\/em><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nZirconium Oxide Balls<\/h4>\n\n\n\nYTTRIA Stabilized, High purity 95% ZrO2<\/sub><\/p>\n\n\n\nZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n\n95% Beads<\/strong><\/em><\/li>\n\n\n\nSpecific Gravity:<\/strong> 6.0<\/li>\n\n\n\nHardness:<\/strong> Hv 1150 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong>0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.65mm, 0.8mm, 1mm, 1.25mm, 1.5mm, 2mm<\/span>,\u00a03mm, 5mm, 6mm, 8mm, 10mm, 15mm, 20mm, 25mm\n
Note:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nThrough-Hardened Carbon Steel Balls Type 1065<\/h4>\n\n\n\nThrough-Hardened Carbon Steel Balls are magnetic and can be used in the food industry along with 440C stainless steel media. They are a low-cost media that are superior and recommended over case-hardened carbon steel media which have a soft core. They are packaged with no oil finish\u2014always dry packed\u2014as they will rust in water.<\/p>\n\n\n\n\n(SAE 1065\u2013through-hardened)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201362<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 1\/8″, 3\/16″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nChrome Steel Balls Type 52100<\/h4>\n\n\n\nChrome Balls (steel type 52100) are through-hardened and tempered steel balls designed to achieve maximum strength and quality. Ball hardness is in the 60\u201367 HRC range. They wear better than 440C stainless steel and through-hardened carbon steel. They are also recommended for applications where a through-hardened steel ball is needed in larger sizes (\u00bd” and larger). They are sometimes packaged with a very light oil finish to reduce rust due to humidity.<\/p>\n\n\n\n\n(SAE 52100)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.8<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 60\u201367<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1mm,<\/span> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\n440C Stainless Steel Balls<\/h4>\n\n\n\n440C Stainless Steel Balls are through-hardened and tempered throughout for maximum strength and quality. They are magnetic, and corrosion-resistant (generally rust-resistant). They are recommended for food applications and lighter colored slurries.<\/p>\n\n\n\n\n(AISI 440-C)<\/li>\n\n\n\nSpecific Gravity:<\/strong> 7.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 58\u201365<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 2mm<\/span>, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 5\/16″, 3\/8″, 1\/2″, 3\/4″, 1″<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nCarbon Steel Shot<\/h4>\n\n\n\nCarbon Steel Shot media is through-hardened and very low cost. As such, they are not uniformly spherical and often can leave a gritty black residue.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 7.6<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL C 55\u201360<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> .25mm, .50mm, .6mm,.71mm, .85mm, 1mm, 1.18mm, 1.40mm, 1.70mm, 2mm<\/span>, 2.36mm, 2.80mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nForged Steel Balls (Large Diameter)<\/h4>\n\n\n\nForged Steel Balls are used for gold mining, cement factories, oil processing and large scale industrial applications. They are made by machine (standard) sizes 20mm\u201375mm. They are manually made (hit by air hammer) sizes 75mm\u2013125mm. They have hardness 55\u201363 HRC. All forged balls are through-hardened, and shipped in 55-gallon steel drums. They range in sizes from 20mm\u2013125mm. Standard lead time is 6\u20138 weeks FOB Akron, Ohio USA.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> 55\u201363HRC<\/li>\n\n\n\nRelative Cost:<\/strong> Very Low<\/li>\n\n\n\nSizes Available:<\/strong> 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 65mm, 75mm, 90mm, 100mm, 125mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n\nHow To Select Grinding Media<\/a><\/div>\n<\/div>\n\n\n\n\n\n\n\nNon-Metallic Grinding Media<\/h2>\n\n\n\nNote:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Balls and Satellites<\/h4>\n\n\n\nUnion Process is the one source for 90%, 94%, 99.5% and 99.9% alumina media. 90% alumina is available in satellites and rod\/cylinders. 94% alumina balls have excellent wear resistance with higher impact strength to save running costs with less contamination. They have great wear rate generally better than 90% or 99.5%. 99.5% alumina balls have the highest alumina content for a moderate price. The .5% impurity is MgO that is added to inhibit grain growth during sintering in the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls are made of very pure and reactive (expensive) raw materials. They are for high purity alumina applications where contamination is a factor.<\/p>\n<\/div>\n\n\n\n\nALUMINA 99.9% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.9<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1800<\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong> 1mm, 2mm<\/span>, 3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.5% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.8<\/li>\n\n\n\nHardness:<\/strong> Hv 1300 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.2mm, 0.3mm, 0.5mm, 1mm, 2mm<\/span>, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.8% SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4-3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 78 \u2013 79<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\nALUMINA 94% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.59<\/li>\n\n\n\nHardness:<\/strong> Hv 1200 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.5mm, 1mm, 2mm<\/span>, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 90% BEADS AND SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4 – 3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 75<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 3mm, 7\/32″, 1\/4″, 3\/8″, 1\/2″<\/li>\n\n\n\nNote: 3mm size are Beads-remaining four sizes are satellites<\/em><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Beads<\/h4>\n\n\n\nAlumina Beads are specially formulated to be used in high-energy mills in which a high degree of fineness is required. They are used in various industrial fields such as inks, paints, advanced ceramics, mining, cosmetics and pharmaceutical industries. They are a perfectly spherical shape with high mechanical properties and high wear resistance at a moderate price.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> Mohs 9, VICKERS (0.5 kg) 1200 \u00b1 50<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.34mm, 0.34\u20130.44mm, 0.4\u20130.6mm, 0.8\u20131.2mm, 1.2\u20131.6mm, 1.4\u20131.6mm, 1.6\u20131.8mm, 1.8\u20132.0mm<\/span>, 2.0\u20132.5mm, 2.5\u20133.0mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nGlass Beads<\/h4>\n\n\n\nThis grade is used for milling applications with 85% roundness. All Glass Beads are lead-free and less expensive.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 2.5<\/li>\n\n\n\nHardness:<\/strong> KNOOP 515 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.50mm, 0.40\u20130.60mm, 0.6\u20130.8mm, 0.75\u20131.0mm, 0.80\u20131.0mm, 1mm, 1.5mm, 1.0\u20131.25mm, 1.25\u20131.55mm, 1.55\u20131.85mm, 1.7\u20132.0mm, 2mm<\/span>, 2.0\u20132.4mm, 2.4\u20132.9mm, 2.85\u20133.45mm, 3mm, 3.5mm, 3.6\u20134.1mm, 3.8\u20134.1mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nSilicon Carbide Balls<\/h4>\n\n\n\nSilicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination. They are only available in 5mm,10mm, 15mm and 20mm sizes. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.1<\/li>\n\n\n\nHardness:<\/strong> KNOOP 2500 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 5mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nSilicon Nitride Balls<\/h4>\n\n\n\nSilicon Nitride Balls are very high-cost grinding media that are used for milling same materials (silicon nitride ball to mill silicon nitride materials) to avoid contamination. They are now available in 2mm and 3mm and sizes up to 25mm. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.2<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1300<\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 2mm, <\/span>3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/span><\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nTungsten Carbide Satellites\/Balls<\/h4>\n\n\n\nTungsten Carbide media is the hardest and densest (highest specific gravity) media and is available in both satellites and balls upon request. They are available in sizes ranging from 3\/32″ to 1″ in diameter. They are a high-cost media and are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 14.4-14.8<\/li>\n\n\n\nHardness:<\/strong> 92.0 \u00b1 0.5 Hra<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate to High<\/li>\n\n\n\nSizes Available:<\/strong>3\/32″, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 9\/32″, 5\/16″, 3\/8″, 7\/16″, 1\/2″, 9\/16″, 3\/4″, 1″<\/span>\n\nNote: Smaller sizes beginning at\u00a0<\/em><\/span>0.5mm<\/span><\/em>\u00a0available upon request.<\/em><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nZirconium Oxide Balls<\/h4>\n\n\n\nYTTRIA Stabilized, High purity 95% ZrO2<\/sub><\/p>\n\n\n\nZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n\n95% Beads<\/strong><\/em><\/li>\n\n\n\nSpecific Gravity:<\/strong> 6.0<\/li>\n\n\n\nHardness:<\/strong> Hv 1150 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong>0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.65mm, 0.8mm, 1mm, 1.25mm, 1.5mm, 2mm<\/span>,\u00a03mm, 5mm, 6mm, 8mm, 10mm, 15mm, 20mm, 25mm\n
Through-Hardened Carbon Steel Balls are magnetic and can be used in the food industry along with 440C stainless steel media. They are a low-cost media that are superior and recommended over case-hardened carbon steel media which have a soft core. They are packaged with no oil finish\u2014always dry packed\u2014as they will rust in water.<\/p>\n\n\n\n
Chrome Balls (steel type 52100) are through-hardened and tempered steel balls designed to achieve maximum strength and quality. Ball hardness is in the 60\u201367 HRC range. They wear better than 440C stainless steel and through-hardened carbon steel. They are also recommended for applications where a through-hardened steel ball is needed in larger sizes (\u00bd” and larger). They are sometimes packaged with a very light oil finish to reduce rust due to humidity.<\/p>\n\n\n\n
440C Stainless Steel Balls are through-hardened and tempered throughout for maximum strength and quality. They are magnetic, and corrosion-resistant (generally rust-resistant). They are recommended for food applications and lighter colored slurries.<\/p>\n\n\n\n
Carbon Steel Shot media is through-hardened and very low cost. As such, they are not uniformly spherical and often can leave a gritty black residue.<\/p>\n\n\n\n
Forged Steel Balls are used for gold mining, cement factories, oil processing and large scale industrial applications. They are made by machine (standard) sizes 20mm\u201375mm. They are manually made (hit by air hammer) sizes 75mm\u2013125mm. They have hardness 55\u201363 HRC. All forged balls are through-hardened, and shipped in 55-gallon steel drums. They range in sizes from 20mm\u2013125mm. Standard lead time is 6\u20138 weeks FOB Akron, Ohio USA.<\/p>\n\n\n\n
Note:<\/em><\/span><\/strong> <\/span>Sizes shown in red indicate media that is recommended for use in bead mills except where stated otherwise. <\/em><\/p>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Balls and Satellites<\/h4>\n\n\n\nUnion Process is the one source for 90%, 94%, 99.5% and 99.9% alumina media. 90% alumina is available in satellites and rod\/cylinders. 94% alumina balls have excellent wear resistance with higher impact strength to save running costs with less contamination. They have great wear rate generally better than 90% or 99.5%. 99.5% alumina balls have the highest alumina content for a moderate price. The .5% impurity is MgO that is added to inhibit grain growth during sintering in the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls are made of very pure and reactive (expensive) raw materials. They are for high purity alumina applications where contamination is a factor.<\/p>\n<\/div>\n\n\n\n\nALUMINA 99.9% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.9<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1800<\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong> 1mm, 2mm<\/span>, 3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.5% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.8<\/li>\n\n\n\nHardness:<\/strong> Hv 1300 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.2mm, 0.3mm, 0.5mm, 1mm, 2mm<\/span>, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 99.8% SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4-3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 78 \u2013 79<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 1\/4″<\/li>\n<\/ul>\n<\/div>\n\n\n\n\nALUMINA 94% BALLS<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.59<\/li>\n\n\n\nHardness:<\/strong> Hv 1200 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.5mm, 1mm, 2mm<\/span>, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 13mm, 15mm, 20mm<\/li>\n<\/ul>\n\n\n\nALUMINA 90% BEADS AND SATELLITES<\/h5>\n\n\n\n\nSpecific Gravity:<\/strong> 3.4 – 3.7<\/li>\n\n\n\nHardness:<\/strong> ROCKWELL 45N 75<\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 3mm, 7\/32″, 1\/4″, 3\/8″, 1\/2″<\/li>\n\n\n\nNote: 3mm size are Beads-remaining four sizes are satellites<\/em><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nAlumina Beads<\/h4>\n\n\n\nAlumina Beads are specially formulated to be used in high-energy mills in which a high degree of fineness is required. They are used in various industrial fields such as inks, paints, advanced ceramics, mining, cosmetics and pharmaceutical industries. They are a perfectly spherical shape with high mechanical properties and high wear resistance at a moderate price.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> N\/A<\/li>\n\n\n\nHardness:<\/strong> Mohs 9, VICKERS (0.5 kg) 1200 \u00b1 50<\/li>\n\n\n\nRelative Cost:<\/strong> Low to Moderate<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.34mm, 0.34\u20130.44mm, 0.4\u20130.6mm, 0.8\u20131.2mm, 1.2\u20131.6mm, 1.4\u20131.6mm, 1.6\u20131.8mm, 1.8\u20132.0mm<\/span>, 2.0\u20132.5mm, 2.5\u20133.0mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nGlass Beads<\/h4>\n\n\n\nThis grade is used for milling applications with 85% roundness. All Glass Beads are lead-free and less expensive.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 2.5<\/li>\n\n\n\nHardness:<\/strong> KNOOP 515 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Low<\/li>\n\n\n\nSizes Available:<\/strong> 0.25\u20130.50mm, 0.40\u20130.60mm, 0.6\u20130.8mm, 0.75\u20131.0mm, 0.80\u20131.0mm, 1mm, 1.5mm, 1.0\u20131.25mm, 1.25\u20131.55mm, 1.55\u20131.85mm, 1.7\u20132.0mm, 2mm<\/span>, 2.0\u20132.4mm, 2.4\u20132.9mm, 2.85\u20133.45mm, 3mm, 3.5mm, 3.6\u20134.1mm, 3.8\u20134.1mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm, 14mm, 16mm<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nSilicon Carbide Balls<\/h4>\n\n\n\nSilicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination. They are only available in 5mm,10mm, 15mm and 20mm sizes. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.1<\/li>\n\n\n\nHardness:<\/strong> KNOOP 2500 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 5mm, 10mm, 15mm, 20mm<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n\n\n<\/figure>\n\n\n\nSilicon Nitride Balls<\/h4>\n\n\n\nSilicon Nitride Balls are very high-cost grinding media that are used for milling same materials (silicon nitride ball to mill silicon nitride materials) to avoid contamination. They are now available in 2mm and 3mm and sizes up to 25mm. They are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 3.2<\/li>\n\n\n\nHardness:<\/strong> Hv10<\/sub> = 1300<\/li>\n\n\n\nRelative Cost:<\/strong> Very High<\/li>\n\n\n\nSizes Available:<\/strong> 2mm, <\/span>3mm, 5mm, 10mm, 15mm, 20mm, 25mm<\/span><\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nTungsten Carbide Satellites\/Balls<\/h4>\n\n\n\nTungsten Carbide media is the hardest and densest (highest specific gravity) media and is available in both satellites and balls upon request. They are available in sizes ranging from 3\/32″ to 1″ in diameter. They are a high-cost media and are a special order item.<\/p>\n\n\n\n\nSpecific Gravity:<\/strong> 14.4-14.8<\/li>\n\n\n\nHardness:<\/strong> 92.0 \u00b1 0.5 Hra<\/li>\n\n\n\nRelative Cost:<\/strong> Moderate to High<\/li>\n\n\n\nSizes Available:<\/strong>3\/32″, 1\/8″, 5\/32″, 3\/16″, 7\/32″, 1\/4″, 9\/32″, 5\/16″, 3\/8″, 7\/16″, 1\/2″, 9\/16″, 3\/4″, 1″<\/span>\n\nNote: Smaller sizes beginning at\u00a0<\/em><\/span>0.5mm<\/span><\/em>\u00a0available upon request.<\/em><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n\n\n\n\n<\/figure>\n\n\n\nZirconium Oxide Balls<\/h4>\n\n\n\nYTTRIA Stabilized, High purity 95% ZrO2<\/sub><\/p>\n\n\n\nZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n\n95% Beads<\/strong><\/em><\/li>\n\n\n\nSpecific Gravity:<\/strong> 6.0<\/li>\n\n\n\nHardness:<\/strong> Hv 1150 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong>0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.65mm, 0.8mm, 1mm, 1.25mm, 1.5mm, 2mm<\/span>,\u00a03mm, 5mm, 6mm, 8mm, 10mm, 15mm, 20mm, 25mm\n
Union Process is the one source for 90%, 94%, 99.5% and 99.9% alumina media. 90% alumina is available in satellites and rod\/cylinders. 94% alumina balls have excellent wear resistance with higher impact strength to save running costs with less contamination. They have great wear rate generally better than 90% or 99.5%. 99.5% alumina balls have the highest alumina content for a moderate price. The .5% impurity is MgO that is added to inhibit grain growth during sintering in the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls are made of very pure and reactive (expensive) raw materials. They are for high purity alumina applications where contamination is a factor.<\/p>\n<\/div>\n\n\n\n
Alumina Beads are specially formulated to be used in high-energy mills in which a high degree of fineness is required. They are used in various industrial fields such as inks, paints, advanced ceramics, mining, cosmetics and pharmaceutical industries. They are a perfectly spherical shape with high mechanical properties and high wear resistance at a moderate price.<\/p>\n\n\n\n
This grade is used for milling applications with 85% roundness. All Glass Beads are lead-free and less expensive.<\/p>\n\n\n\n
Silicon Carbide Balls are very high-cost grinding media that are used for milling same materials (silicon carbide ball to mill silicon carbide materials) to avoid contamination. They are only available in 5mm,10mm, 15mm and 20mm sizes. They are a special order item.<\/p>\n\n\n\n
Silicon Nitride Balls are very high-cost grinding media that are used for milling same materials (silicon nitride ball to mill silicon nitride materials) to avoid contamination. They are now available in 2mm and 3mm and sizes up to 25mm. They are a special order item.<\/p>\n\n\n\n
Tungsten Carbide media is the hardest and densest (highest specific gravity) media and is available in both satellites and balls upon request. They are available in sizes ranging from 3\/32″ to 1″ in diameter. They are a high-cost media and are a special order item.<\/p>\n\n\n\n
YTTRIA Stabilized, High purity 95% ZrO2<\/sub><\/p>\n\n\n\nZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n\n95% Beads<\/strong><\/em><\/li>\n\n\n\nSpecific Gravity:<\/strong> 6.0<\/li>\n\n\n\nHardness:<\/strong> Hv 1150 kg\/mm2<\/sup><\/li>\n\n\n\nRelative Cost:<\/strong> High<\/li>\n\n\n\nSizes Available:<\/strong>0.03mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.65mm, 0.8mm, 1mm, 1.25mm, 1.5mm, 2mm<\/span>,\u00a03mm, 5mm, 6mm, 8mm, 10mm, 15mm, 20mm, 25mm\n
Zirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3\u20448″ and \u00bd” cylinders. This 95% grade is high-cost.<\/p>\n\n\n\n