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Suzhou Jinxing Abrasive Co., Ltd.    

Black silicon carbide


Black silicon carbide is made of high-quality carbon silicon and petroleum coke, and is smelted in a resistance furnace at a high temperature of 2000 degrees or higher for 46 hours or more. Black silicon carbide has a hardness between corundum and diamond, mechanical strength is higher than corundum, and it is brittle and sharp. Widely used in abrasives, refractory materials, deoxidants, etc .; fine powder made of black silicon carbide is used in electronics, aerospace and other high-tech enterprises.
The chemical composition of black silicon carbide abrasives meets the requirements of the following table:

Grit size Chemical content Sic (Not less than) You Li carbon is not more than FC (not more than) Fe2O3 not more than
Black silicon carbide 12 # ~ 9 # 98.50 0.20 0.60
100 # ~ 180 # 98.00 0.30 0.80
220 # ~ 240 # 97.00 0.30 1.20

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