Black fused alumina for polishing wheels - abrasives

Black fused alumina is a kind of artificial abrasives which has proper hardness, high toughness, high heat conductivity and bonding ability. When used as polishing material, it doesn’t scratch, burn the surface of the work pieces, or cause any color difference.

Available Size:

80#, 110#, 150#, 200#.

Applications:

Stainless steel dinnerware;
Panel glass.
Electrodeposits;
Copper and aluminum parts;
Wood and bamboo products;

Typical Chemical Analysis:

Al2O3: 82%;
Fe2O3: 6%;
SiO2: 8%;
TiO2: 3%.
Total BA Content: > 98%.

Typical Physical Properties:

Color: Black;
Crystal Form: Trigonal System;
Moh's Hardness: ≥ 9.0;
Melting Point: 2050 °C;
Max. Working Temperature: 1850 °C;
Bulk Density: > 3.50 g/cm3;
Linear Expansion Coefficient (0-1600 °C): Approx. 7.