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Materials Science Overview
Grinding Discs & Films

Grinding & Polishing Powders

Aluminum Oxide, Boron Carbide, and Silicon Carbide Powdered Abrasives



Aluminum Oxide Grinding Powders

Aluminum Oxide Grinding Powders

Aluminum oxide grinding powders for fine grinding or rough polishing of petrographic specimens, soft metals and their alloys, and cross-sections of electronic devices. Softer than diamond or silicon carbide. Normally used in a slurry.

SDS (129KB PDF)

Grit Grading System and Hardness of Materials Charts

Prod # Description Unit Price Order / Quote
815-10 240 Grit Aluminum Oxide 1 lb. $18.00
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815-14 320 Grit Aluminum Oxide 1 lb. 18.00
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815-22 400 Grit Aluminum Oxide 1 lb. 18.00
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815-30 600 Grit Aluminum Oxide 1 lb. 18.00
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Boron Carbide Grinding Powders

In terms of hardness, Boron carbide (B4C) with a Mohs hardness of 9.5 is third only to diamond and so makes an excellent lower cost alternative to diamond for the precision grinding, lapping and polishing of most hard materials.

SDS (107KB PDF)

Prod # Description Unit Price Order / Quote
815-90 Boron Carbide Powder, 8μm 250g $123.00
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815-91 Boron Carbide Powder, 10μm 250g 92.00
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815-92 Boron Carbide Powder, 14μm 250g 92.00
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815-93 Boron Carbide Powder, 18μm 250g 81.00
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815-94 Boron Carbide Powder, 23μm 250g 81.00
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815-95 Boron Carbide Powder, 35μm 250g 77.00
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815-96 Boron Carbide Powder, 42μm 250g 77.00
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815-97 Boron Carbide Powder, 50μm 250g 72.00
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Silicon Carbide Grinding Powders

Silicon Carbide Grinding Powders

Silicon carbide grinding powders for fine grinding or rough polishing of semiconductors, ceramics and ferrous materials. Softer than diamond but harder than aluminum oxide. Normally used as a slurry.

#815-50, -76 SDS (120KB PDF)
#815-80 to 815-87-5 SDS (107KB PDF)

Prod # Description Unit Price Order / Quote
Graded by grit size, 1lb container size
815-50 120 Grit Silicon Carbide 1 lb. $17.50
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815-54 240 Grit Silicon Carbide 1 lb. 17.50
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815-58 320 Grit Silicon Carbide 1 lb. 18.00
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815-62 400 Grit Silicon Carbide 1 lb. 19.00
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815-66 600 Grit Silicon Carbide 1 lb. 20.00
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815-70 800 Grit Silicon Carbide 1 lb. 22.00
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815-74 1000 Grit Silicon Carbide 1 lb. 23.00
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815-78 1200 Grit Silicon Carbide 1 lb. 23.00
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Graded by particle size in microns, 1lb container size
815-80 Silicon Carbide Powder, 8μm 1 lb. 57.00
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815-81 Silicon Carbide Powder, 10μm 1 lb. 52.00
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815-82 Silicon Carbide Powder, 14μm 1 lb. 31.00
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815-83 Silicon Carbide Powder, 18μm 1 lb. 31.00
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815-84 Silicon Carbide Powder, 23μm 1 lb. 25.00
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815-85 Silicon Carbide Powder, 35μm 1 lb. 24.00
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815-86 Silicon Carbide Powder, 42μm 1 lb. 23.00
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815-87 Silicon Carbide Powder, 50μm 1 lb. 23.00
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Graded by particle size in microns, 5lb container size.
815-80-5 Silicon Carbide Powder, 8μm 5 lb. 226.00
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815-81-5 Silicon Carbide Powder, 10μm 5 lb. 162.00
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815-82-5 Silicon Carbide Powder, 14μm 5 lb. 108.00
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815-83-5 Silicon Carbide Powder, 18μm 5 lb. 108.00
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815-84-5 Silicon Carbide Powder, 23μm 5 lb. 76.00
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815-85-5 Silicon Carbide Powder, 35μm 5 lb. 67.00
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815-86-5 Silicon Carbide Powder, 42μm 5 lb. 61.00
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815-87-5 Silicon Carbide Powder, 50μm 5 lb. 61.00
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