China Multilayer Metal Composite Bar Material - Titanium Clad Copper & Stainless Steel Suppliers and Factory
Reference Standard: GB/T 12769-2015
Titanium GR1, GR2, TA1, TA2; Stainless Steel (304, 316L), etc.
Copper T1, T2; Anaerobic Copper TU1, TU2, etc.
Stainless Steel (304, 316L); Steel (Q235), etc.
Rectangular: Width (20–150) × Thickness (6–30)
Circle: Φ (8–50)
Square: (10–30)
Outer Layer — Titanium (Ti)
Provides excellent corrosion resistance and biocompatibility.
Resists seawater, acidic environments, and chloride ion corrosion; low density reduces weight; aesthetically pleasing surface.
Middle Layer — Copper (Cu)
Offers superior electrical and thermal conductivity; serves as a functional transition and buffer layer.
Acts as an electrical/thermal bridge for current or heat. Effectively alleviates thermal stress between titanium and steel, enhancing bonding strength and improving production feasibility.
Inner Layer — Steel (Stainless / Carbon)
Provides main structural strength, rigidity, and toughness; significantly reduces overall cost.
High mechanical strength, good processability (welding, machining), and a cost-effective base material.
"External corrosion resistance + medium-high conductivity + internal high strength": The surface is corrosion-resistant, the middle layer efficiently conducts electricity and heat, and the inner layer bears structural loads.
Excellent electrochemical compatibility: In cathodic protection applications, the potential sequence of titanium and copper can be carefully designed to achieve specific functions.
Good thermal expansion matching: The copper transition layer reduces stress caused by thermal expansion differences between the titanium and steel layers.
High cost performance: Using inexpensive steel as the base while maintaining high surface performance is far more economical than using all-titanium or thick-copper materials.
Ti/Cu/Steel clad material is designed to meet extreme or special multi-functional requirements, and is mainly applied in the following industries:
High-End Chemical & Electrochemical Industries
Special electrolytic electrodes and anode baskets for corrosive media (e.g., chlorine-containing environments). The titanium layer resists corrosion, the copper layer ensures uniform current distribution, and the steel layer provides the structural framework. Also used as conductive structural components in highly corrosive environments.
Marine Engineering & Shipbuilding
Hybrid grounding and lightning protection systems for ships. The titanium layer resists seawater corrosion, the copper layer provides a low-resistance grounding path, and the steel layer offers structural support. Also used as auxiliary anodes or special connectors in cathodic protection systems requiring both conductivity and corrosion resistance.
Power & Energy Sector (Nuclear Power)
Integrated conductive/structural components for key nuclear power plant parts, including control rod drive mechanisms and measurement instrument penetration assemblies. Titanium resists high-temperature/high-pressure primary circuit water; copper enables precise, low-loss signal/current transmission; steel withstands mechanical loads and enables welding to main structures.
Aerospace & Defense
Special parts requiring lightweight design, high strength, high conductivity, and environmental corrosion resistance. Used for grounding, electromagnetic shielding, or conductive structural units in spacecraft and high-performance aircraft. The copper layer provides electromagnetic pulse protection capability.
Scientific Research Equipment
Vacuum chambers or beam components in particle accelerators and synchrotron radiation sources. The titanium layer facilitates ultra-high vacuum (low outgassing rate); the copper layer transmits high-frequency currents and dissipates internal heat efficiently; the steel layer provides the main structural support.