Scrap carbide price

The price of scrap carbide is primarily determined by its Tungsten (W) and Cobalt (Co) content. Buyers should prioritize scrap with a Tungsten content of 85% to 95%. It is essential to distinguish between 'Clean Scrap' (pure inserts, drills, or end mills) and 'Contaminated Scrap' (carbide attached to steel shanks or brazed tools), as the latter incurs higher processing costs and lower unit prices. Always request a XRF (X-Ray Fluorescence) analysis report to verify the chemical composition before finalizing the price.

Recycled carbide is a critical raw material for producing Ammonium Paratungstate (APT) and new Tungsten Carbide powder. It is widely used in the manufacturing of cutting tools, mining bits, wear-resistant parts, and jewelry. For B2B buyers, sourcing high-quality scrap allows for a closed-loop supply chain, significantly reducing the cost of raw materials compared to purchasing virgin tungsten ore.

International trade of scrap metal must adhere to the Basel Convention regarding the transboundary movement of hazardous wastes (though most carbide scrap is classified as non-hazardous metal scrap). Suppliers should provide ISO 14001 (Environmental Management) and ISO 9001 (Quality Management) certifications. Ensure the material is free from radioactive contamination and that the supplier provides a Radiation-Free Certificate to avoid customs rejection.

Scrap carbide typically comes in forms like solid inserts, sludge (grinding swarf), or powder. Solid scrap is the most valuable due to ease of sorting and high yield. Carbide sludge/swarf often contains coolant and oil, requiring specialized drying and extraction processes; therefore, it carries a significant price discount (often 30-50% less than solids). Buyers must calculate the net dry weight and recovery rate when dealing with sludge.

The biggest risk is material substitution or weight fraud. Some unscrupulous suppliers may mix heavy steel or lead into the middle of bulk bags to mimic the density of tungsten. To mitigate this, use third-party inspection services (like SGS or CCIC) to perform random sampling and weight verification at the loading port. Always use Escrow services or Letter of Credit (L/C) for large transactions to ensure payment is only released upon verified delivery.

Scrap carbide prices are pegged to the International Tungsten Market Index (e.g., MB or Fastmarkets prices). Negotiate a formula-based price (e.g., Index Price x Yield % - Processing Margin) rather than a fixed price to protect against market fluctuations during the shipping period. For long-term contracts, seek volume-based rebates and clear terms on who bears the cost of impurities (Iron, Nickel, etc.) exceeding 1%.

Due to its high density, scrap carbide is usually shipped in 20ft containers to meet weight limits. Ensure the material is packed in heavy-duty woven bags (1-2 tons each) or steel drums to prevent packaging failure. For shipping to specific regions, verify the HS Code (typically 8101.9700) and ensure all documents align with the import quotas or environmental permits of the destination country.

Look for verified manufacturers and exporters on Made-in-China.com who have a history of exporting to Europe or North America. Prioritize suppliers with 'Diamond Member' status and those who offer on-site video audits of their sorting facilities. Checking for RMI (Responsible Minerals Initiative) compliance is also a plus for ethical sourcing.