Crushed tungsten carbide

Buyers must prioritize Grit Size (Mesh) and Tungsten Carbide (WC) content. For hardfacing applications, a WC content of 90-95% is standard to ensure maximum hardness. You should also specify the Cobalt (Co) binder percentage, typically ranging from 3% to 10%, which dictates the balance between wear resistance and impact toughness. Ensure the particles are angular and sharp for optimal cutting efficiency in oilfield or mining tools.

Crushed Tungsten Carbide is primarily used for hardfacing and wear protection. Key scenarios include Oil & Gas drilling bits, mining cutters, agricultural plowshares, and recycling shredder blades. It is often applied via Oxy-acetylene welding or Laser Cladding to create a sacrificial layer that extends the lifespan of expensive base metal components by 300% to 500%.

A reliable supplier should provide a Material Test Report (MTR) or Certificate of Analysis (COA) for every batch. Look for compliance with ISO 9001:2015 for quality management. For specific applications, verify if the material meets ASTM B276 (for porosity) and ASTM B390 (for grain size). Ensure the supplier uses virgin raw materials rather than recycled scrap if your application requires high-purity performance.

The choice of mesh size is critical: Coarse grits (e.g., 1/4" x 1/8" or 8-12 mesh) are ideal for aggressive cutting in soft formations, while Fine grits (e.g., 30-40 or 80-100 mesh) provide a smoother, more impact-resistant surface for hard rock drilling. Mixed-grade distributions are often used to fill gaps between large particles, increasing the overall density of the hardfacing layer.

The primary risk is material substitution, where suppliers mix in cheaper ferro-tungsten or recycled sludge. To mitigate this, use third-party inspection services (like SGS or Intertek) to perform a Spectrometer Analysis before shipment. Another risk is weight discrepancies due to the high density of the material; always insist on calibrated industrial scales and photographic evidence of the gross/net weight on the pallet.

Tungsten is a market-sensitive commodity; prices fluctuate based on the APT (Ammonium Paratungstate) index. Negotiate for formula-based pricing if you are a high-volume buyer. For MOQs, many professional suppliers on Made-in-China.com accept sample orders of 10-25kg, but significant discounts (often 10-15%) trigger at the 500kg to 1-ton threshold.

Because Crushed Tungsten Carbide is extremely heavy, standard cardboard is insufficient. Require double-layered plastic bags inside steel drums or reinforced plastic pails, secured on fumigated wooden pallets. Ensure the Sea Freight (LCL/FCL) provider is aware of the high floor-loading weight to prevent container damage. For international trade, clarify the HS Code (typically 2849.90) to ensure correct duty application.

Always verify the supplier's Business License and check if they are an Audited Supplier on Made-in-China.com. Use Secured Payment terms or Letters of Credit (L/C) for large transactions. Avoid suppliers who cannot provide a proven track record of exports to your specific region, as customs regulations for 'dual-use' industrial materials can be stringent.