Union Process, Inc. Datasheets for Milling and Grinding Media

Milling and grinding media are designed for ball milling and the grinding down of bulk, powder or granular materials into finer powder forms or disperse pigments in a resin or coating.
Milling and Grinding Media: Learn more

Product Name Notes
Carbon Steel Grinding Balls (SAE 1013 -- case-hardened, SAE 1065--through-hardened) Specific Gravity: 7.8 Hardness: ROCKWELL C 60 - 62 Relative Cost: Low Sizes Available: 1/8". 3/16", 1/4", 5/16". 3/8". 1/2"...
Ceramic (Steatite) Satellites Specific Gravity: 2.6 - 2.7 Hardness: ROCKWELL 45N 60-65 Relative Cost: Low to Moderate Sizes Available: 1/8", 1/4", 5/16", 3/8", 1/2"
Chrome Steel Grinding Balls (SAE 52100) Specific Gravity: 7.8 Hardness: ROCKWELL C 62 - 66 Relative Cost: Low to Moderate Sizes Available: 1mm, 1.59mm, 2mm 1/8", 5/32", 3/16", 7/32", 1/4",...
Glass Beads (Lead Free) Specific Gravity: 2.5 Hardness: KNOOP 515 kg/mm2 Cost: Low Sizes Available: 0.4 – 0.6mm, 0.5 – 0.75mm, 0.6 – 0.8mm, 0.75 – 1.0mm,0.8 – 1.0mm,...
Nylon Pellets Specific Gravity: 0.7 - 1.2 Relative Cost: Low to Moderate Sizes Available: 1/8"
Stainless Steel Grinding Balls (AISI 440-C) Specific Gravity: 7.7 Hardness: ROCKWELL C 55-64 Relative Cost: Moderate Sizes Available: 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 1/2", 3/4"
Steel Shot, Through-Hardened Specific Gravity: 7.7 Hardness: ROCKWELL C 55 - 60 Relative Cost: Low Sizes Available: .25mm, .40mm, .50mm, .71mm, 1.18mm, 1.40mm, 1.70mm, 2mm 2.36mm, 2.80