Silicon Carbide, SiC, is the hardest of all common abrasive materials and also very sharp. It is friable, which means that it breaks down along the crystal cleavage plains leaving new sharp edges for cutting. For this reason it is fast cutting initialy but short in life. It is ideal for use on woods, non ferrous metals (aluminum, brass, bronze, magnesium an titanium) and plastics. Silicon carbide has sometimes been used as a final finishing grain for stainless steel to give a shinning finish. This is because the sharp SiC crystal structure produces fine straight edged grind lines that reflect light better than the rounded aluminum oxide grind lines.
Black Silicon Carbide: (Click to download technical data sheet)
SiC Powders for General Purposes
SiC Powders for Refractories E
SiC Powders for Refractories V
SiC Powders for General Purpose LA
SiC Macro for General Purposes