Brass scrap

Selecting the correct grade is critical for metallurgical efficiency. Buyers should distinguish between Honey Brass (Yellow Brass Scrap), which typically contains 60-70% copper, and Ocean Brass (Radiator Scrap). For high-precision casting, prioritize Ebony (Red Brass Scrap) due to its higher copper content (85%). Always verify the purity levels and ensure the scrap is free from excessive aluminum, iron, and manganese contamination, which can compromise the integrity of the final alloy.

Compliance with the ISRI (Institute of Scrap Recycling Industries) specifications is the global benchmark. Ensure the scrap meets ISRI Code 'Honey' or 'Ivory' standards depending on your needs. Request a Spectrometer Analysis Report from the supplier to confirm the Copper (Cu) and Zinc (Zn) ratio. For international trade, ensure the material is free from radioactive contaminants and hazardous waste residues, adhering to Basel Convention guidelines.

The price of brass scrap is intrinsically linked to the LME (London Metal Exchange) Copper and Zinc spot prices. Calculate the recovery rate (yield); high-quality scrap should offer a 90-98% melting yield. Factor in the processing costs (sorting, cleaning, and smelting) versus the cost of primary ingots. Procurement from Made-in-China.com often provides a competitive edge due to the high concentration of specialized metal recyclers and efficient logistics.

For plumbing components, ensure the scrap is Lead-Free (less than 0.25% Pb) to meet modern environmental and health regulations like the U.S. Safe Drinking Water Act. For electrical applications, verify electrical conductivity requirements, as impurities like phosphorus or iron can significantly reduce performance. Request third-party inspection reports (e.g., SGS or CCIC) to validate these technical attributes before shipment.

The most significant risks include weight discrepancies and material substitution (adulteration). To mitigate this, use Escrow payment services or Letters of Credit (L/C). Always mandate a Pre-shipment Inspection (PSI) by a reputable agency to verify that the container contents match the declared HS Code (typically 7404.00) and quality grade.

Negotiate a 'Price Adjustment Clause' based on the actual outturn weight and purity at the destination port. Standard contracts should allow for a deduction in payment if the moisture content exceeds 1% or if attachments (non-metallic waste) exceed the agreed-upon percentage (usually 2-3%).

Scrap metal is often subject to strict environmental import quotas and licenses. Ensure the supplier provides a Certificate of Origin, a Clean Report of Findings, and an Environmental Protection Declaration. For shipping, use 20ft heavy-duty containers to maximize weight capacity, and ensure the cargo is properly secured and balanced to prevent shifting during maritime transit.

Utilize the Audit Supplier reports on Made-in-China.com to verify the supplier's business license, production capacity, and export history. Avoid making 100% upfront payments via wire transfer; instead, opt for a 30% deposit and 70% balance against the Bill of Lading (B/L) after the quality has been verified by a third party.