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Black silicon carbide(C) is produced at high temperature in an electric resistance type furnace with quartz sand and petroleum coke as its main raw materials. Its hardness is between fused alumina and synthetic diamond. Mechanical intensity of it is higher than fused alumina. Its basic mineral is Alpha-SiC Hexagonal system The Knoop Hardness scale is 3100-3280kg/mm2.It is brittle and sharp, and has a good electrical and heat conductivity.As an abrasive material,it can be used in grinding Non-metal and high-tensile strength metals such as cast iron,non-ferrous,rock,leather,rubber,etc.Moreover,it is also widely used in the metallurgical materials and high-class refractory,etc.
Chemical composition(weight %)
Grit size SiC F.C Fe2O3
12#-90# Min.98.50 Max.0.20 Max.0.6
100#-150# Min.98.00 Max.0.30 Max.0.8
180#-220# Min.97.00 Max.0.30 Max.1.2
Magnetic Material Content
Grit Size Content %
16#-30# Max.0.030
36#-60# Max.0.025
70#-120# Max.0.020
150#-220# Max.0.015
Reference chemical composition of silicon carbide(TN) of non-abrasives application:
Reference Chemical Composition(weight %)
Type SIC F.C Fe2O3
TN98 Min.98.00 Max.1.00 Min.0.50
TN97 Min.97.00 Max.1.50 Min.0.80
TN95 Min.95.00 Max.2.50 Min.1.00
TN90 Min.90.00 Max.3.00 Min.2.50
TN88 Min.88.00 Max.3.50 Min.3.00
TN85 Min.85.00 Max.5.00 Min.3.50
TN60 Min.60.00 Max.12.00 Min.3.50
TN50 Min.50.00 Max.15.00 Min.3.50
various sizes can be supplied at buy's option.
Various micro-powders of black silicon carbide are available too,More
details will be furnished upon request
Packing can be arranged according to buyer's requirements.
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