Import Black Silicon Carbide 88 — Buy in Bulk from Supplier in China

Yuhan International Trade Co., Ltd. supplies black silicon carbide 88 from China, a grade designation that typically indicates 88 percent minimum SiC content and positions the material in the lower-purity segment of the black SiC range. The supplier describes the product as manufactured through fusion of quartz and coke in high-temperature furnaces, the standard Acheson process yielding crystalline silicon carbide. This grade offers hardness and thermal conductivity suited to applications where ultimate purity is secondary to cost-effectiveness. Buyers should note that 88 percent SiC materials contain higher free carbon and free silica than metallurgical or abrasive grades above 98 percent SiC, affecting performance in sensitive applications.

The microstructure of black silicon carbide 88 consists of hexagonal alpha-SiC crystals with some unreacted carbon and silica phases, plus potential iron contamination from raw materials or processing equipment. Typical free carbon in this grade ranges 0.3 to 0.8 percent, free silica 0.5 to 2.0 percent, and iron oxide up to 0.5 percent. Grain shape is angular and conchoidal, with friability higher than premium grades due to inclusions weakening crystal boundaries. Density remains near 3.2 grams per cubic centimetre, though bulk density varies with packing and fines content. This grade is standard for refractory castables, kiln furniture, and certain blasting applications where moderate recyclability is acceptable.

Industrial buyers include refractory manufacturers producing castables and ramming mixes for steel ladles and cement kilns, blasting contractors for heavy rust and scale removal, and producers of silicon carbide ceramics where subsequent high-temperature processing burns off residual carbon. The lower SiC content reduces material cost per tonne but increases consumption rate in recyclable blasting systems. Yuhan International Trade Co., Ltd. is located in Shanghai's Hongkou district, suggesting trading rather than manufacturing operations; buyers should clarify whether the company sources from specific Hebei, Ningxia, or Xinjiang producers, where most Chinese black SiC is manufactured. Confirm actual origin of manufacture, packaging options, and whether the supplier holds direct relationships with producers or operates through intermediaries.

Yuhan International Trade Co., Ltd. maintains a registered address at 23A Fulong Building, 277 Siping Road, Hongkou District, Shanghai 200082, China. This location in central Shanghai, rather than an industrial zone, indicates the company likely operates as a trading house rather than direct manufacturer. The supplier tier is marked as imported, meaning the profile was migrated or created through data import rather than organic registration, and the trust tier is harbor, denoting basic profile existence without advanced verification. The response rate and average response hours both show zero, suggesting limited active engagement or a profile in setup phase.

The source description references ISO, SGS, and CE certifications, but these are presented in generic marketing language without certificate numbers, scopes, or dates; buyers must independently verify any claimed certifications directly with Yuhan International Trade Co., Ltd. The company promotes flexible MOQ, FOB and CIF shipping terms, and competitive pricing, though no specific figures are provided. No manufacturing facility address, production capacity, year of establishment, workforce size, or export history is disclosed. For due diligence, buyers should request business licence, export registration, and supplier audit reports, and consider whether the Shanghai office represents the trading arm of a specific production group or a pure intermediary.