Double-Layer Metal Composite Bar Material - China Suppliers & Factory for Titanium, Zirconium, and Stainless Steel Materials
Product Performance & Specification Range
Baoji Special Steel Titanium Industry Co., Ltd. has been manufacturing metal composite material series products since 2001. After 25 years of dedicated development, we have established a complete and specialized metal composite material production line.
📋 Reference Standard: GB/T 12769-2015
🔩 Substrate Materials
Copper T1, T2 · Anaerobic Copper TU1, TU2 · Aluminum, etc.
🛡️ Clad Materials
Titanium (Ti) · Zirconium (Zr) · Nickel (Ni) · Tantalum (Tan) · Stainless Steel (304, 316L), etc.
📏 Clad Layer Thickness
Conventional: 1.0 ~ 2.5 mm
📐 Main Cross-Section Shape & Size Range (mm)
- Rectangular: Width (20 ~ 150) × Thickness (6 ~ 30)
- Circle: Φ (8 ~ 50)
- Square: (10 ~ 30)
- Wire: Φ (2.0 ~ 8.0)
Products can be fully customized according to customer requirements.
Product Display
Application Field Analysis
Double-layer metal clad bar material — mainly titanium clad copper — not only ensures superior conductivity but also provides strong surface corrosion resistance. It is widely used in highly corrosive conductive environments such as electrochemistry, electroplating, electrolysis, hydrometallurgy, PCB manufacturing, electrochemical industry, water treatment, and ocean engineering.
-
1 Electrochemistry and Corrosion Environment Electrode +Electrolytic Industry:
· Cathode roll: Used for producing electrolytic copper foil (a key raw material for lithium batteries and printed circuit boards). The titanium layer contacts the corrosive electrolyte; the copper layer provides high conductivity and thermal conductivity — one of the most significant applications of titanium-coated copper today.
· Other electrolytic electrodes: Used in the chlor-alkali industry and hydrometallurgy as insoluble anodes or special cathodes, balancing conductivity and corrosion resistance.
· Cathodic protection system: As an anode bed material for corrosion prevention of offshore platforms and pipelines — the titanium layer resists seawater corrosion, and the copper layer enhances current distribution efficiency. -
2 Special Conductive / Thermal Components +High-performance electronic devices:
· Contacts, connectors, or heat dissipation substrates (e.g., power semiconductor modules) requiring high conductivity and local corrosion resistance.
· Some vacuum equipment requires components that are both conductive and corrosion-resistant.
Welding and high-temperature tools:
· Resistance welding electrodes, electrical discharge machining electrodes, etc. Copper provides excellent conductivity; the titanium layer prevents high-temperature oxidation or adhesion. -
3 Marine and Chemical Equipment +Ship and seawater systems:
· Manufacturing seawater coolers, heat exchanger tubesheets, etc. The titanium layer resists seawater corrosion; the copper layer enhances heat conductivity and reduces costs compared to all-titanium solutions.
Chemical equipment:
· Reactor linings, agitators, etc., used in situations requiring both corrosion resistance and rapid heat conduction. -
4 New Energy and High Technology Fields +Hydrogen fuel cell:
· Bipolar plates or related components — the titanium layer resists the corrosive environment inside the fuel cell; the copper layer ensures high conductivity.
Nuclear industry:
· Some nuclear reactors require materials that are radiation-resistant, corrosion-resistant, and thermally conductive. -
5 Other Special Applications +Decoration and Architecture:
· The surface is titanium for color and durability; the interior is copper for strength and weight reduction — suitable for high-end decoration or architectural components.
Medical Equipment:
· Combines the biocompatibility of titanium and the antibacterial properties of copper — suitable for special medical devices or implantable equipment (requiring strict biocompatibility verification).
Double-Layer Metal Clad Bar Material — Conclusion
⚙️
Double-layer metal composite materials are not merely a simple "1+1". Instead, through advanced composite technologies, they achieve functional integration and performance amplification, successfully resolving the key engineering challenge that a single metal cannot simultaneously meet the requirements of "surface corrosion resistance" and "high conductivity of the bulk". They are particularly suitable for high-end and demanding industrial environments.
Frequently Asked Questions
-
Q What is a double-layer metal clad bar material and how is it made? ▾A double-layer metal clad bar material is a composite product made by metallurgically bonding two different metals — such as titanium and copper — into a single bar or rod. It is manufactured using advanced composite technologies including explosive bonding, rolling, and drawing processes. The result is a material that combines the surface properties of one metal (e.g., corrosion resistance of titanium) with the bulk properties of another (e.g., high conductivity of copper), achieving performance that neither metal can deliver alone.
-
Q What substrate and clad material combinations are available? ▾Substrate materials include Copper T1, T2, anaerobic Copper TU1 and TU2, and Aluminum. Clad materials include Titanium (Ti), Zirconium (Zr), Nickel (Ni), Tantalum (Tan), and Stainless Steel (304, 316L). Custom combinations can also be produced based on specific application requirements.
-
Q What sizes and cross-section shapes are available for the composite bar? ▾We offer a wide range of cross-section shapes and sizes: Rectangular (width 20–150 mm × thickness 6–30 mm), Circular (Φ 8–50 mm), Square (10–30 mm), and Wire (Φ 2.0–8.0 mm). The clad layer thickness is conventionally 1.0–2.5 mm. All specifications can be customized to meet customer requirements.
-
Q Why is titanium-clad copper the most common combination for electrochemical applications? ▾Titanium offers exceptional corrosion resistance in aggressive electrolyte environments, while copper provides among the highest electrical and thermal conductivity of all metals. By combining both in a clad structure, the material can withstand harsh electrochemical conditions on its surface while efficiently conducting electricity through its copper core — making it ideal for applications such as cathode rolls for electrolytic copper foil production, chlor-alkali electrodes, and cathodic protection anodes.
-
Q Can the double-layer composite bar be used in the new energy and hydrogen fuel cell industry? ▾Yes. Double-layer metal clad bar materials are increasingly used in new energy applications, including hydrogen fuel cells. The titanium outer layer resists the highly corrosive internal environment of fuel cells, while the copper core ensures excellent electrical conductivity. They are also being explored for use in nuclear reactor components that require radiation resistance, corrosion resistance, and good thermal conductivity.
-
Q Does Baoji Special Steel Titanium Industry offer custom composite bar products? ▾Yes. With over 25 years of experience and a fully established production line, Baoji Special Steel Titanium Industry Co., Ltd. offers fully customized double-layer metal composite bar products. Customers can specify substrate material, clad material, clad layer thickness, cross-section shape, and dimensional tolerances. All products are manufactured in accordance with the GB/T 12769-2015 reference standard.