Titanium clad copper sheet

When sourcing these composite materials, you must prioritize the bonding strength between the titanium and copper layers, typically achieved through explosive welding or rolling cladding. Ensure the titanium grade (usually Grade 1 or Grade 2 for corrosion resistance) and copper grade (T2 or C11000 for high conductivity) meet your specific electrical and chemical requirements. The cladding thickness ratio is also critical; common configurations include a 1.0mm to 2.0mm titanium layer to protect the inner copper core.

These sheets are primarily used in electrochemical engineering, such as electroplating baths, hydrometallurgy (copper/nickel electrowinning), and chlor-alkali industries. They serve as high-performance bus bars or anodes, where the copper provides superior electrical conductivity and the titanium cladding offers exceptional corrosion resistance against aggressive acidic or alkaline electrolytes.

Buyers should demand compliance with ASTM B898, which is the standard specification for reactive and refractory metal-clad plate. It is essential to verify Ultrasonic Testing (UT) reports to ensure 100% bonding area without delamination. Additionally, look for suppliers with ISO 9001:2015 certification and request Material Test Reports (MTRs) that detail the chemical composition and mechanical properties of both metals.

The Explosive Bonding method is generally preferred for heavy-duty industrial use as it creates a metallurgical bond that is stronger than the parent metals, ensuring no electrical resistance increase at the interface. Hot rolling is more cost-effective for thinner sheets but requires strict temperature control to avoid the formation of brittle intermetallic compounds at the interface, which could lead to cracking during fabrication.

The biggest risk is internal delamination, which cannot be seen with the naked eye but causes catastrophic failure under thermal stress. To mitigate this, always use Third-Party Inspection (TPI) services like SGS or Intertek to perform ultrasonic scans before shipment. Another risk is fluctuating raw material prices for both titanium and copper; it is advisable to use short-term price locks or formulas tied to the London Metal Exchange (LME).

Focus on Total Cost of Ownership (TCO) rather than just the per-kilogram price. Negotiate for custom cutting and machining (such as drilling or bending) to be done at the factory, as titanium is difficult to process locally. Request a staged payment plan (e.g., 30% deposit, 70% after successful UT testing and before shipment) to ensure the supplier adheres to quality benchmarks.

Titanium clad copper is heavy and susceptible to surface scratching. Ensure the supplier uses reinforced wooden crates (IPPC standard) with moisture-proof plastic lining. Sheets should be separated by non-woven fabric or pearl cotton to prevent friction. For shipping to international markets, specify FOB or CIF terms and ensure the bill of lading accurately reflects the HS Code (typically 7410 or 8108) to avoid customs delays.

Utilize the Secured Trading services provided by Made-in-China.com to protect your funds. Always conduct a factory audit (virtual or physical) to confirm the supplier has the specialized explosive welding sites or high-end rolling mills required for this product, rather than being a mere middleman.