从China供应商批发进口9.2 Mohs Green Silicon Carbide Powder — FOB条款

Zhengzhou Xinli Wear-resistant Material Co., Ltd. supplies green silicon carbide powder with a stated Mohs hardness of 9.2 and a minimum silicon carbide content of 98.5%. The material is produced by fusing petroleum coke and high-purity silica in an electric resistance furnace at temperatures above 2200°C, yielding alpha-phase SiC crystals with a hexagonal crystal structure. The 9.2 Mohs hardness places it between corundum (9.0) and diamond (10), making it suitable for working hard, brittle materials where aluminium oxide would fracture or dull rapidly. This grade is classified under FEPA or JIS standard grit sizes from coarse to ultra-fine fractions.

The high purity and friable nature of green SiC distinguish it from black silicon carbide. The green variant contains less iron and silica impurities, resulting in sharper, more brittle cutting edges that fracture to expose fresh cutting points under pressure. Typical chemical composition for premium green SiC shows SiC minimum 98.5%, free carbon maximum 0.3%, free silica maximum 0.6%, and iron oxide maximum 0.15%. Specific gravity ranges from 3.20 to 3.25 g/cm³, with a Knoop hardness of 2600-2800 kg/mm². Thermal conductivity is approximately 120 W/m·K at room temperature, and the coefficient of thermal expansion is 4.0 x 10⁻⁶ /°C. These properties suit applications requiring rapid heat dissipation during grinding.

Primary buyers include manufacturers of vitrified grinding wheels, honing stones, wire saw slurry for photovoltaic silicon wafer slicing, and precision lapping compounds for optical glass and sapphire substrates. Semiconductor wafer processing and LED substrate lapping represent growing demand segments. The powder is typically supplied in 25 kg paper bags, 1 tonne bulk bags, or customised packaging. Buyers should confirm with Zhengzhou Xinli Wear-resistant Material Co., Ltd. the exact FEPA or JIS grit size distribution, bulk density, and magnetic content specifications for their intended application, as these parameters determine cutting rate and surface finish quality.

Zhengzhou Xinli Wear-resistant Material Co., Ltd. is located at Xiangan Road, Longhu District, Zhengzhou City, Henan Province, China, with postal code 450000. The company's position in Henan Province places it within one of China's major refractory and abrasive material production regions, with access to bauxite, silicon carbide furnace operations, and rail connections to Qingdao and Tianjin ports. The supplier holds a harbor trust tier classification. The response rate is recorded at 0.00% with zero average response hours, indicating no confirmed platform inquiry activity or a non-representative sample period. Buyers should initiate direct contact to assess current operational status and sales engineering support.

The supplier profile does not state year of establishment, registered capital, production capacity in tonnes per annum, number of furnaces, or export licence details. No ISO, quality management, or environmental management certifications are mentioned in the source data. The product description positions the company as serving bonded abrasive tools, lapping, and polishing processes, with emphasis on metalworking and semiconductor end markets. Buyers should request a company profile, catalogue of standard grades, and reference customers in their target industry before advancing to sample or trial orders. The Zhengzhou location offers inland logistics advantages for domestic Chinese buyers and consolidated container export for international trade.