Green sic powder 280# for polishing optical glass
Green sic powder is made of petroleum coke and silica as the main raw materials, with salt added as an additive, and is smelted at high temperature in a resistance furnace. It is green crystal, brittle and sharp, and has certain thermal conductivity and electrical conductivity. The microscopic shape is hexagonal crystal. The Mohs hardness of silicon carbide is 9.3, the micro-dense hardness is 2940-3300kg/mm2, and the Knoop hardness is 2670-2815kg/mm2. Among abrasives, it is higher than corundum and second only to diamond, cubic boron nitride and boron carbide. The density is generally considered to be 3.20-3.25g/cm3. The natural bulk density of silicon carbide abrasive is between 1.2–1.6g/cm3, and the specific gravity is 3.20-3.25g/cm3.
Availabe size:
Section Sand：0-1mm, 1-3mm, 3-5mm, 5-8mm
F-macrogrit-Sizes-bonded F12F14F16F20F22F24F30F36F40F46F54F60F70F80F90F100F120F150F180F220
JIS-microgrit-Sizes-bonded 240#280#320#360#400#500#600#800#1000#1200#1500#2000#3000#4000#6000# 8000#10000#
Data for green silicon carbide powder:
| Chemcial data | ||||
| SIC | SiO2 | Fe2O3 | F. Fe | C |
| 99%min | ≤0.2 | ≤0.2 | 0.04% | 0.1% |
| Physical data | ||||
| colour | Mohs hardness | Knoop harnedd | Specific Gravity | Melting Point |
| green | 9 | 2600 | 3.2 g/cm3 | 2600° |
Green silicon carbide powder:
Green sic powder package:
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