... -16 is a black, friable, medium bulk density silicon carbide abrasive grain. Description:The high density black silicon carbide fused by heating high purity silicon sand and carbon ... and ceramic industry.CF-16 is a black, friable, medium bulk density silicon carbide abrasive grain. To get this kind of grains, we ... , 280, 320, 360, 400, 500, 600, 800, 1000, 1200. Black Silicon Carbide used for Ceramic