Green Silicon Carbide is produced in electrical internal resistance furnaces from silica sands and petroleum coke(added salt during smelting),with high hardness,thermal conductivity and strength.
Green silicon carbide includes many different grits (macrogrit and micropowder),green silicon carbide grit 220 is one of thems,whose technical datasheet is as follows:
AVERAGE CHEMICAL COMPOSITION(TYPICAL)
SiC ≥98.6%
CF ≤0.20%
Fe2O3 ≤0.40%
SiO2 ≤0.05%
PHYSICAL PROPERTIES(TYPICAL)
Density ≥3.18g/cm3
Mohs Hardness 9.4
Magnetic ≤0.0017%
Melting Point 2250℃
Refractoriness 1900℃
PARTICLE SIZE DISTRIBUTION
MESH UM %
+140 +106 0
+200 +75 ≤15
+230+270 +63+53 ≥40
+230+270+325 +63+53+45 ≥60