Double-layer Metal Composite Bar Material from China Suppliers - High-Quality Factory Products in Titanium, Zirconium, and More
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 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 (Ta), Stainless Steel (304, 316L), etc.
Clad Layer Thickness
Conventional: 1.0 ~ 2.5 mm
Cross-Section Shapes & Sizes
📐 Rectangular: Width (20–150) × Thickness (6–30) mm
⭕ Circle: Φ 8–50 mm
🔲 Square: 10–30 mm
🧵 Wire: Φ 2.0–8.0 mm
Custom Orders Welcome: 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 electrochemical processing, electroplating, electrolysis, hydrometallurgy, PCB manufacturing, electrochemical industries, water treatment, and ocean engineering.
Electrochemistry and Corrosion Environment Electrode
Electrolytic Industry:
· Cathode roll: Used for producing electrolytic copper foil (a key raw material for lithium batteries and PCBs). The titanium layer contacts the corrosive electrolyte; the copper layer provides high conductivity and thermal conductivity — one of the most significant current applications.
· Other electrolytic electrodes: Used in 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 offshore platforms and pipelines. The titanium layer resists seawater corrosion; the copper layer enhances current distribution efficiency.
· Cathode roll: Used for producing electrolytic copper foil (a key raw material for lithium batteries and PCBs). The titanium layer contacts the corrosive electrolyte; the copper layer provides high conductivity and thermal conductivity — one of the most significant current applications.
· Other electrolytic electrodes: Used in 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 offshore platforms and pipelines. The titanium layer resists seawater corrosion; the copper layer enhances current distribution efficiency.
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. Vacuum equipment also benefits from components that are both conductive and corrosion-resistant.
· Welding and high-temperature tools: Resistance welding electrodes and electrical discharge machining electrodes. Copper provides excellent conductivity; the titanium layer prevents high-temperature oxidation or adhesion.
· Welding and high-temperature tools: Resistance welding electrodes and electrical discharge machining electrodes. Copper provides excellent conductivity; the titanium layer prevents high-temperature oxidation or adhesion.
Marine and Chemical Equipment
· Ship and seawater systems: 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 where both corrosion resistance and rapid heat conduction are required.
· Chemical equipment: Reactor linings, agitators, etc., used where both corrosion resistance and rapid heat conduction are required.
New Energy and High Technology Fields
· Hydrogen fuel cell: Bipolar plates or related components. The titanium layer resists the corrosive internal environment; the copper layer ensures high conductivity.
· Nuclear industry: Some nuclear reactors require materials that are radiation-resistant, corrosion-resistant, and thermally conductive.
· Nuclear industry: Some nuclear reactors require materials that are radiation-resistant, corrosion-resistant, and thermally conductive.
Other Special Applications
· Decoration and Architecture: Titanium surface provides color and durability; the copper interior provides strength and reduces weight. Suitable for high-end decoration or architectural components.
· Medical Equipment: Combines the biocompatibility of titanium with the antibacterial properties of copper, suitable for special medical devices or implantable equipment (requiring strict biocompatibility verification).
· Medical Equipment: Combines the biocompatibility of titanium with 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 double-layer metal clad bar material and how is it manufactured?
Double-layer metal clad bar material is a composite product consisting of two different metals bonded together through advanced metallurgical processes. Typically, a corrosion-resistant metal such as titanium forms the outer layer, while a highly conductive metal such as copper forms the inner core. The manufacturing process ensures a strong metallurgical bond between layers, providing both the surface corrosion resistance of the outer metal and the bulk conductivity of the inner metal.
Q
What substrate and clad material combinations are available?
Substrate materials include Copper (T1, T2), Anaerobic Copper (TU1, TU2), and Aluminum. Clad materials include Titanium (Ti), Zirconium (Zr), Nickel (Ni), Tantalum (Ta), and Stainless Steel (304, 316L). The most commonly used combination is titanium-clad copper, which offers an excellent balance of corrosion resistance and electrical conductivity. Custom combinations can be produced based on specific application requirements.
Q
What sizes and shapes of clad bar materials are available?
Products are available in multiple cross-sectional shapes: Rectangular (width 20–150 mm × thickness 6–30 mm), Circular (Φ 8–50 mm), Square (10–30 mm), and Wire form (Φ 2.0–8.0 mm). The conventional clad layer thickness ranges from 1.0 to 2.5 mm. All specifications comply with reference standard GB/T 12769-2015, and custom dimensions are available upon request.
Q
In which industries is titanium-clad copper bar material most widely used?
Titanium-clad copper bar material is most widely used in industries that require simultaneous corrosion resistance and high electrical conductivity. Key application sectors include electrolytic copper foil production (for lithium batteries and PCBs), chlor-alkali industry, hydrometallurgy, electroplating, water treatment, marine engineering, hydrogen fuel cells, and chemical processing equipment. It is also increasingly used in new energy and high-technology fields.
Q
What are the key advantages of using clad metal bars over single-metal alternatives?
Clad metal bars offer several significant advantages over single-metal solutions: they combine the best properties of two metals in one component, eliminating the need to compromise between corrosion resistance and conductivity. They are more cost-effective than using expensive metals (such as titanium or tantalum) throughout the entire cross-section. The metallurgical bond ensures long-term structural integrity and consistent performance. They also reduce overall component weight compared to all-copper designs with titanium coatings.
Q
Can products be customized to meet specific project requirements?
Yes. Baoji Special Steel Titanium Industry Co., Ltd. offers full customization services. Products can be tailored in terms of material combination, cross-sectional shape, dimensions, clad layer thickness, and surface finish to meet specific engineering and project requirements. With over 25 years of manufacturing experience and a dedicated production line, the company can handle both standard and highly specialized orders efficiently.