Silicon Carbide (SiC, molecular formula SiC) is a high-hardness inorganic synthetic material, natural crystalline moissanite is scarce with no industrial mining value; commercial Si is fully produced via high-temperature smelting of quartz sand and petroleum coke in submerged arc furnaces, divided into Black Silicon Carbide & Green Silicon Carbide two mainstream types according to purity and crystal property.

Our factory supplies diversified grades including granular, powder and pressed briquette SiC, covering metallurgical deoxidation, abrasive processing, high-temperature refractory, semiconductor, new energy ceramics and composite material raw materials. Featuring high melting point (~2700℃), Mohs hardness 9.2, outstanding thermal shock resistance and anti-oxidation property, it becomes an irreplaceable raw material for high-temperature and wear-resistant industrial production.

Sic Silicon Carbide

chemical composition

Model	Chemical Composition %
Model	SiC	Free Carbon	Fe2O3
SiC 98	98 min	0.2 max	0.60 max
SiC 97	97.0 min	0.3 max	1.20 max
SiC 90	90.0 min	1.0 max	1.20 max
SiC 88	88.0 min	4.0 max	1.5 max
Model-SiC Briquette	SiC	Al2O3	Fe2O3
SiC Briquette 70	70.0 min	5.0 max	3.0 max
SiC Briquette 65	65.0 min	5.0 max	3.0 max

silicon carbide uses

① Metallurgical & Steelmaking Industry(SiC88/90/Briquette main use)

Work as compound deoxidizer & carburizer for converter/electric furnace steelmaking, SiC reacts with molten oxygen to generate CO floating out, remove oxide inclusions, reduce molten steel oxygen content 30%+, replace partial ferrosilicon & recarburizer to cut raw material cost 10~15%; also act as inoculant for gray/ductile iron to refine graphite grain, reduce shrinkage cavity & white cast defects.

② Abrasive & Grinding Industry(Si97/Si98 Green Si priority)

Black SiC: Coated abrasives (sandpaper/abrasive belt), bonded grinding wheel for cast iron, aluminum alloy, stone rough cutting & blasting rust removal;

Green SiC: Precision lapping/polishing for hard alloy, optical glass, sapphire wafer, semiconductor silicon slice, ultra-fine polishing powder for electronic component finishing.

③ High-Temperature Refractory Industry(SiC90~98)

Raw material for refractory brick, castable refractory, kiln furniture, furnace lining for steel plant, glass kiln, cement rotary kiln; improve lining anti-slag corrosion and service life by 2~3 times.

④ Semiconductor & Optoelectronic Industry(High-purity SiC≥99.5%)

Raw material for SiC wafer substrate, high-frequency power device, optical lens & mirror blank, widely used in new energy photovoltaic, power electronic components.

⑤ Automotive & New Energy Composite Materials

Additive for brake pad, clutch friction plate, wear-resistant pump casing; used as reinforcing filler for high-temperature resistant composite in new energy vehicle battery shell & thermal conductive parts.

⑥ Chemical & Environmental Protection Industry

Raw material for anti-corrosion ceramic filter, power plant flue gas desulfurization nozzle, wear-resistant slurry pipeline lining, extend equipment service life 5~10x than stainless steel parts.

Sic Silicon Carbide