Green silicon carbide is made from petroleum coke and high-quality silica as the main raw material, adding salt as an additive, and smelted at high temperature in a resistance furnace. Its hardness is between corundum and diamond, and its mechanical strength is higher than that of corundum.
Black Silicon Carbide 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. The mechanical intensity of it is higher than that of fused alumina. It is brittle and sharp and has electrical and heat conductivity in some degree. Black silicon carbide is suitable for grinding cast iron, non-ferrous metal, leather, rubber, wood, rock, it also be used as high grade refractory material.
Grit | SiC | F.C. | Fe2O3 |
F12-F90 | 98.50Min | 0.20Max | 0.60Max |
F100-F150 | 98.00Min | 0.30Max | 0.80Max |
F180-F220 | 97.00Min | 0.30Max | 1.20Max |
F230-F400 | 96.00Min | 0.40Max | 1.20Max |
F500-F800 | 95.00Min | 0.40Max | 1.20Max |
F1000-F1200 | 93.00Min | 0.50Max | 1.20Max |
P12-P90 | 98.50Min | 0.20Max | 0.60Max |
P100-P150 | 98.00Min | 0.30Max | 0.80Max |
P180-P220 | 97.00Min | 0.30Max | 1.20Max |
P230-P500 | 96.00Min | 0.40Max | 1.20Max |
P600-P1500 | 95.00Min | 0.40Max | 1.20Max |
P2000-P2500 | 93.00Min | 0.50Max | 1.20Max |
Item | Black silicon carbide | Green silicon carbide |
Basic mineral | α-SIC | α-SIC |
Crystal system | hexagonal | hexahonal |
Crystal color | Black | Green |
Density | ≥3.12g/cm3 | ≥3.18g/cm3 |
Mohs hardness | 9.15 | 9.15 |
Micro hardness | HV3100-3280 | HV3200-3400 |
Grinding ability(compared with diamond as one) | 0.25 | 0.28 |
Liner expansion coefficient when 900ºC.α·10-6k-1 | 4.4 | 4.6 |
Electrical resistivity | 3×105-3×107Ω.cm | 3×105-3×107Ω.cm |
Q1:Are you a factory? Where are you located?
A: We are a professional manufacturer with more than 20 years production experience of composite materials, Our own factory locate in shijiazhuang city, hebei province.