Excellent raw materials make good hardness and toughness, high efficiency and durability.

Black silicon carbide grit F grade 20-220#; 97%min, 0-1, 1-3, 3-5mm; Lumps (90% and 97%min); Black silicon carbide micropowder F230-F3000/JIS240-JIS8000 Black silicon carbide is produced from quartz sand and high quality anthracite/petroleum coke under high temperature in and electric resistance furnace. It looks black and has a microhardness of 2800-3300kg/mm2. Abrasive tools made of it, are fit to grind metals and non-metals materials of low tensile strength, for example, grey cast iron, brass, alumina, stone, leather and hard rubber etc. It can also be used for refractory purpose or in electronic industry.

Size	SiC ≥%	F.C ≤%	Fe2O3 ≤%
F 12-90	98.5	0.20	0.60
F 100-150	98.0	0.30	0.80
F 180-220	97.0	0.30	1.20
F 230-360	96.5	0.30	0.80
F 400-600	95.0	0.40	0.80
F 800-1200	93.5	0.50	0.80
F 1500-3000	92.5	0.60	0.80

Black Silicon Carbide