Import Black Fused Aluminium Oxide — Buy in Bulk from Supplier in China

Black fused aluminium oxide is an artificial corundum abrasive produced by fusing bauxite with a reducing agent in an electric arc furnace. The material contains controlled levels of iron oxide and silicon oxide, which give it a characteristic black colour and moderate hardness compared to other fused alumina grades. Standard sizes range from F8 to F220, with aluminium oxide content of 75-81% depending on the fraction. The supplier lists F24-F100 grades at minimum 77.0% Al₂O₃, 11.0% SiO₂ minimum, 5.0% Fe₂O₃ minimum, and 1.5-3.5% TiO₂; F120-F220 grades show slightly broader variance at 75-81% Al₂O₃, 9-12% SiO₂, 4-6% Fe₂O₃, and 2-3% TiO₂.

True gravity sits at approximately 3.5 g/cm³, with bulk density between 1.65 and 1.95 kg/m³. The Mohs hardness of 8 places it below white fused alumina but above many natural abrasives, making it suitable for applications where aggressive stock removal is not required. The 2050°C melting point reflects the stability of the fused alumina structure. Standard sizing follows FEPA or closely related grading systems, ensuring consistency in cutting rates and surface finish across batches. The lower friability compared to white variants means less fracturing during use, which reduces dust and extends abrasive life in certain applications.

Primary buyers include manufacturers of bonded abrasives, such as grinding wheels and cutting wheels, as well as contractors in surface preparation and metal finishing. The material sees extensive use in sand blasting and polishing aluminium, stainless steel, and other metal surfaces where a softer cut prevents substrate damage. Non-metal applications include grinding and polishing ceramic, plastic, glass, wood, laminate, and bamboo. Additional end uses span rust removal, mould and foundry part cleaning, semiconductor processing, stone and glass etching, and pre-coating surface treatment for electroplating, coating, and welding operations. Importers should verify exact size distribution, packaging format, and certification status directly with the supplier before placing orders.

Luoyang Zhongsen Refractory Co., Ltd. is located on Guanlin Road in Luolong District, Luoyang City, Henan Province, China, with postal code 471000. The supplier carries an 'imported' tier designation and a 'harbor' trust tier, which indicates a baseline level of platform verification without premium status. The response rate shows 0.00% with zero average response hours recorded, suggesting limited or no recent engagement through the platform's inquiry system. Buyers should note that this profile contains no stated production capacity, employee count, year of establishment, or specific equipment details.

The listing focuses on black fused aluminium oxide for abrasive applications, with technical data presented in the product description rather than in structured specification fields. No certifications, quality management systems, or testing capabilities are mentioned in the available profile information. The supplier does not state MOQ, pricing, lead time, Incoterms, or packaging specifications in the extracted data. Prospective buyers should treat the product description as the primary source of technical information and request comprehensive company documentation, including business licence and any ISO or abrasive-specific certifications, before advancing to sample orders or factory audits.