Silicon carbide has two commonly used bases, black silicon carbide and green silicon carbide, both of which belong to α-SiC.
(1) Black silicon carbide contains about 95% SiC toughness Higher than green silicon carbide, it is mostly used to process materials with low tensile strength, such as glass ceramics Stone、Refractories, cast iron and non-ferrous metals, etc.
(2) Green silicon carbide contains more than 97% SiC, good self-sharpening, mostly used for processingcemented carbide、Titanium alloyand Optical, also used for fine grindingHigh speed steel tools。
Physical characteristics:
| Color | green |
| Mohs Hardness | 9.15 |
| True Density | 3.9g/cm3 |
| Melting Point | 2250°C |
| Maximum service temperature | 1900°C |
Chemical content:
| Name | Granularity range | Chemical composition/% | ||
| SiC | F.C | Fe2O3 | ||
| silicon carbide | 4#-220# | ≥99. 00% | ≤0.20% | ≤0.20% |
| 240#-600# | ≥98.50% | ≤0.40% | ≤0.40% | |
| 700#-4000# | ≥97.00% | ≤0.60% | ≤0.60% | |
