Aluminium billet 6351 price

Aluminium alloy 6351 is a medium-strength alloy known for its excellent corrosion resistance and high impact strength. When sourcing, ensure the chemical composition strictly adheres to international standards (e.g., ASTM B221), specifically maintaining Silicon (0.7-1.3%) and Magnesium (0.4-0.8%) levels. This alloy is particularly favored for high-pressure gas cylinders, structural piping, and marine applications due to its superior performance in harsh environments compared to the more common 6061 alloy.

Buyers must demand a Mill Test Certificate (MTC) according to EN 10204 3.1 for every batch. Key quality checks include ultrasonic inspection to detect internal cracks or inclusions, and grain size analysis to ensure uniform extrusion properties. For specialized applications like scuba tanks or industrial gas cylinders, verify that the supplier complies with ISO 9001 and specific safety certifications like DOT (Department of Transportation) or TPED standards.

The price is primarily driven by the LME (London Metal Exchange) cash price plus a conversion premium. The premium covers alloying costs, casting technology (e.g., DCC - Direct Chill Casting), and homogenization treatments. Buyers should look for suppliers on Made-in-China.com who offer transparent pricing formulas linked to the LME or SMM (Shanghai Metals Market) indices to mitigate the risk of sudden market volatility.

6351 billets are predominantly used for impact extrusion and hot extrusion. Because this alloy is prone to Stress Corrosion Cracking (SCC) if not heat-treated correctly, it is vital to confirm the supplier's homogenization process (typically 540°C–560°C). Common end-products include seamless tubes, heavy-duty transport components, and structural profiles for bridges and cranes.

In the metals trade, prices can change daily. It is highly recommended to use hedging strategies or negotiate a fixed premium while leaving the base metal price to be determined at the time of Bill of Lading (B/L) date. Always clarify if the quoted price includes the Export Tax Rebate in China, as changes in government policy can significantly impact the final landed cost.

Aluminium billets are high-density cargo. Ensure the supplier uses seaworthy packaging, typically involving steel strapping on wooden skids with moisture-proof wrapping. For international trade, FOB (Free On Board) or CIF (Cost, Insurance, and Freight) are standard; however, due to the weight, ensure your freight forwarder is experienced in container weight limits and local port handling charges to avoid 'overweight' penalties.

Utilize the Secured Trading services provided by Made-in-China.com to protect your payment until the goods are shipped. Conduct a third-party factory audit (such as SGS or Intertek) to verify the supplier's production capacity and casting equipment. Never transfer full payment upfront; a standard 30% deposit and 70% against the copy of the B/L is the industry norm for reputable exporters.

Before finalizing a purchase, check the Anti-Dumping (AD) and Countervailing Duties (CVD) regulations in your specific country (e.g., USA, EU, or India) regarding Chinese aluminium extrusions or billets. Some regions impose high tariffs on specific HS codes (typically 7601.20). Consult with a customs broker to confirm the Harmonized System code and any applicable preferential trade agreements.