Other Grinding Balls

Ceramic (Soapstone) Balls

Specific gravity: 2,6-2,7

Hardness: ROCKWELL 45N 60-65

Relative Cost: Low to Medium

Dimensions: 1/8 ", 1/4", 5/16 ", 3/8", 1/2 "

 

Glass Beads (Lead Free)

Specific gravity: 2,5

Hardness: Knoop 515 kg / mm2

Cost: Low

Available Dimensions: 0.4 to 0.6mm, 0.5 to 0.75mm, 0.6 to 0.8mm, 0.75 to 1.0mm, 0.8 to 1.0mm, 1.0 to 1.2mm, 1.0 to 1.25mm, 1.1 to 1.3mm, 1.2 to 1.4mm, 1.25- 1.55mm, 1.4 - 1.6mm, 1.55 - 1.85mm, 1.6 - 1.8mm, 1.7 - 2.0mm, 1.8 - 2.0mm, 2.0 - 2.3mm, 2.0 - 2.4mm, 2.3-2.6mm, 2.3-2.7mm, 2.5- 2.85mm, 2.8 - 3.2mm, 2.85-3.3mm, 3.2 - 3.8mm, 3.3-3.6mm, 3.6 - 4.1mm, 3.7 - 4.3mm, 4.2 - 4.8mm, 4.7 - 5.3mm, 5.0mm, 5.7 - 6.3mm, 6.0mm, 6.7 - 7.3mm, 7.0mm, 7.6 - 8.4mm, 8.0mm, 8.6 - 9.4mm, 9.0mm, 9.5 - 10.5mm, 10mm, 10.5 - 11.5mm, 12mm, 14mm, 15mm, 16mm

 

Mullite Beads

Specific gravity: 2.8

Hardness: ROCKWELL 45N 70

Relative Cost: Low

Available Dimensions: 1/8 "

 

Nylon Fittings

Specific gravity: 0,7-1,2

Relative Cost: Low to Medium

Available Dimensions: 1/8 "

 

Silicon Carbide Balls

Specific gravity 3.1

Hardness: Knoop 2,800 kg / mm2

Relative cost: Very High

Available Dimensions: 3/16 ", 1/4"

 

Silicon Nitride Balls

Specific gravity: 3.2

Hardness: HV 1400 - 1500 kg / mm2

Relative cost: Very High

Available Dimensions: 0.5mm, 0.8mm, 1mm, 2mm, 3mm, 5mm, 10mm, 15mm, 20mm, 25mm

 

Tungsten Carbide Balls

Specific Gravity: 14,4-14,8

Hardness: 88 - 89HRA

Relative Cost: High Medium

Available Sizes: 3/32 ", 1/8", 5/32 ", 3/16", 7/32 ", 1/4", 9/32 ", 5/16", 3/8 ", 7 / 16 ", 1/2" Metallic

 

Carbon Steel Grinding Balls (SAE 1013 - hardened, SAE 1.065 - hardened through)

Specific Gravity: 7.8

Hardness: Rockwell C 60-62

Relative Cost: Low

Available Sizes: 1/8 ", 3/16", 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 Medium

Available Dimensions: 1mm, 1.59mm, 2mm

1/8 ", 5/32", 3/16 ", 7/32", 1/4 ", 5/16", 3/8 ", 1/2", 2mm, 2.38mm, 3.2mm

 

Stainless Steel Grinding Balls (AISI 440-C)

Specific Gravity: 7.7

Hardness: C 55-64 ROCKWELL

Relative Cost: Moderate

Available Sizes: 1/8 ", 5/32", 3/16 ", 7/32", 1/4 ", 5/16", 3/8 ", 1/2", 3/4 "

 

Steel Ball, Through-Hardened

Specific Gravity: 7.7

Hardness: Rockwell C 55-60

Relative Cost: Low

Available Dimensions: 0.25mm, 0.40mm, 0.50mm, 0.71mm, 1.18mm, 1.40mm, 1.70mm, 2mm, 2.36mm, 2.80