Copper c12200

C12200 is a Phosphorus-Deoxidized copper with a minimum copper content of 99.9%. Buyers must ensure the Phosphorus (P) content falls between 0.015% and 0.040%, as this prevents hydrogen embrittlement during welding. Key mechanical properties to verify include Tensile Strength (typically 210-300 MPa) and Elongation (≥35%). For HVAC and plumbing applications, ensure the material meets ASTM B75 or ASTM B280 standards for seamless tubes.

Due to its excellent weldability, brazability, and corrosion resistance, C12200 is the industry standard for HVAC (Heating, Ventilation, and Air Conditioning) systems, refrigeration lines, and medical gas delivery. It is also widely used in heat exchangers, condensers, and plumbing tubes. Unlike C11000 (ETP Copper), C12200 is preferred for applications involving high-temperature processing or welding because it does not suffer from steam embrittlement.

Professional buyers should demand a Mill Test Certificate (MTC) according to EN 10204 3.1. For international trade, ensure compliance with ASTM B68/B75 (Seamless Copper Tube) or JIS H3300. If the copper is used for drinking water or medical purposes, verify NSF/ANSI 61 or RoHS/REACH compliance to ensure the absence of lead and other hazardous substances.

Request a Spectrometer Analysis Report to confirm the chemical composition, specifically the phosphorus levels. For tubing, perform a Hydrostatic Test or Eddy Current Testing (ECT) to detect internal flaws or leaks. Additionally, check the grain size (typically 0.010–0.040mm), as this affects the bending performance and prevents 'orange peel' defects during fabrication.

Copper is a LME (London Metal Exchange) traded commodity, meaning prices fluctuate daily. Buyers should negotiate a 'Copper Price + Fabrication Fee' pricing model. To mitigate risk, consider locking in the copper base price at the time of the deposit or using hedging strategies for large-scale, long-term contracts.

Copper is susceptible to oxidation (patina) and physical deformation. Ensure the supplier uses vacuum packaging or anti-tarnish paper (VCI). For tubes and coils, specify wooden crate packaging with internal supports to prevent crushing. Always use FOB or CIF terms and ensure the cargo is insured against moisture damage and theft.

Prioritize 'Audited Suppliers' on Made-in-China.com who have undergone third-party inspections by SGS or TÜV Rheinland. Review their Export Experience to your specific region and check for ISO 9001:2015 certification. Requesting a factory video audit or a small trial order (sample) is highly recommended before committing to bulk shipments.

Use Secured Payment services provided by Made-in-China.com to ensure funds are only released upon proof of shipment. For large transactions, a Letter of Credit (L/C at sight) is the safest international payment method. Always conduct a Pre-shipment Inspection (PSI) to verify quantity and quality against the Proforma Invoice before the final balance is paid.