Green, crystal structure, high hardness and strong cutting ability, stable chemical characteristics, good thermal conductivity. Microcosmic shape is a hexagonal crystal, Mohs hardness is 9.2., Vickers hardness is 3000-3300 kg/mm, microhardness is 3000-3300kg/mm3. Among abrasives, silicon carbide’s hardness is higher than corundum, and ranked below diamond, CBN and boron carbide. Density generally viewed is 3.20g/ mm3 , density of heap is 1.2-1.6g/ mm3 , specific gravity is 3.20～3.25. Raw materials are petroleum coke and quality silicon sand, appended with salt, then smelted in electric arc furnace. Mechanical strength is higher than corundum.
　　Main applications: solar and semiconductor wafer wire sawing; crystal and ferrite polishing; ceramic and special steel precision polishing; bonded and coated abrasive tools; cutting and polishing; non-ferrous metal lapping such as glass, stone, agate and high-grade jewelry; high-grade refractory materials , engineering ceramic, heating elements and thermal elements.

Particle size comparison of commonly used abrasive

	Particle size distribution (micron)			Chemical Index			Physical Index
Size	D3	D50	D94	SiC ≥（%）	Fe2O3 ≤(%)	F•C ≤(%)	PHValue	Density of heap	Magnetic Materials≤(%)
GC#800	≤20.0	14.0±1.0	≥9.0	98.50	0.12	0.12	6--8	1.18	0.008
GC#1000	≤17.3	11.5±1.0	≥7.0	98.50	0.12	0.12	6--8	1.15	0.008
GC#1200	≤16.5	9.5±0.8	≥6.0	98.50	0.15	0.15	6--8	1.13	0.005
GC#1500	≤15.0	8.0±0.6	≥4.8	98.00	0.15	0.15	6--8	1.12	0.005
GC#1800	≤13.5	7.0±0.3	≥4.0	97.80	0.15	0.15	6--8	1.10	0.005
GC#2000	≤13.0	6.7±0.3	≥4.0	97.80	0.15	0.15	6--8	1.00	0.005

Euro standard: grit size F600 F800 F1000 F1200 F1500 F1800 F2000