Multilayer Metal Composite Bar Material - High Quality from China Suppliers and Factory
Product Performance & Specification Range
Baoji special steel titanium industry Co., Ltd. since 2001 start manufacture metal composite material series product, after 25 years of hard work development, we have set up a perfect specialized metal composite material production line.
Reference Standard: GB/T 12769-2015
Clad Materials
Titanium GR1, GR2, TA1, TA2
Stainless Steel: 304, 316L
Stainless Steel: 304, 316L
Intermediate Layer
Copper T1, T2
Anaerobic Copper TU1, TU2
Anaerobic Copper TU1, TU2
Inner Layer Material
Stainless Steel: 304, 316L
Steel: Q235
Steel: Q235
Cross-Section Shape & Size (mm)
Rectangular: Width (20–150) × Thickness (6–30)
Circle: Φ (8–50)
Square: (10–30)
Circle: Φ (8–50)
Square: (10–30)
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Products can be customized according to the customer's requirements.
Product Display
High-Performance and Low-Cost Product
💡 Core Functions of Each Layer of Materials and the Comprehensive Performance after Composite — The essence of this structure lies in the firm combination of the three layers through metallurgical methods (such as explosive cladding and rolling cladding), achieving a performance of "1 + 1 + 1 > 3".
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Outer Layer
Titanium (Ti)
Function: Provides excellent corrosion resistance and biocompatibility.
Performance Contribution: Resists seawater, acidic environments, and chloride ion corrosion; low density reduces weight; aesthetically pleasing surface.
Performance Contribution: Resists seawater, acidic environments, and chloride ion corrosion; low density reduces weight; aesthetically pleasing surface.
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Middle Layer
Copper (Cu)
Function: Offers superior electrical and thermal conductivity; serves as a functional transition and buffer layer.
Performance Contribution: Acts as an electrical/thermal bridge for current or heat. The copper layer effectively alleviates thermal stress, enhances bonding strength, and improves production feasibility between titanium and steel layers.
Performance Contribution: Acts as an electrical/thermal bridge for current or heat. The copper layer effectively alleviates thermal stress, enhances bonding strength, and improves production feasibility between titanium and steel layers.
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Inner / Base Layer
Steel (Stainless or Carbon)
Function: Provides main structural strength, rigidity, and toughness; significantly reduces costs.
Performance Contribution: High mechanical strength, good processability (welding and machining), and a cost-effective base material.
Performance Contribution: High mechanical strength, good processability (welding and machining), and a cost-effective base material.
Summary of Comprehensive Performance:
- 🛡️ "External corrosion resistance + medium-high conductivity + internal high strength": The surface is corrosion-resistant, the middle layer is highly efficient for electrical conduction and heat transfer, and the inner layer is strong and capable of bearing loads.
- ⚡ Excellent electrochemical compatibility: In certain applications (such as cathodic protection), the potential sequence positions of titanium and copper can be carefully designed to achieve specific functions.
- 🌡️ Good thermal expansion matching: Through the transition of the copper layer, the stress caused by the difference in thermal expansion and contraction between the titanium layer and the steel layer is reduced.
- 💰 High cost performance: While ensuring high performance on the surface, using inexpensive steel as the base material is much less costly than using all titanium or thick copper materials.
Main Purposes and Application Fields
Ti/Cu/Steel clad material is always aimed at meeting extreme or special multi-functional requirements, mainly applied in:
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High-End Chemical & Electrochemical Industries
Special electrolytic electrodes and anode baskets. Used in the electrolysis of corrosive media (such as chlorine-containing environments). The titanium layer resists corrosion, the copper layer ensures uniform current distribution, and the steel layer serves as a framework. Also used as conductive structural components in highly corrosive environments.
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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 in cathodic protection systems as auxiliary anodes or special connectors requiring both conductivity and corrosion resistance.
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Power & Energy Sector (Nuclear Power)
Integrated conductive/structural components for key parts of nuclear power plants. Certain control rod drive mechanisms or measurement instrument penetration assemblies require titanium for resistance to high-temperature and high-pressure water, copper for precise low-loss signal or current transmission, and steel for mechanical load bearing and welding to the main structure.
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Aerospace & Defense
Special parts requiring lightweight, high strength, high conductivity, and resistance to environmental corrosion. Used for special grounding, electromagnetic shielding, or conductive structural units in spacecraft or high-performance aircraft. The copper layer provides electromagnetic pulse protection capability.
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Scientific Research Equipment
Vacuum chambers or beam components in particle accelerators and synchrotron radiation sources. The titanium layer facilitates achieving ultra-high vacuum (low outgassing rate), the copper layer is used for cooling or transmitting high-frequency currents, and the steel layer provides the main structure. The copper layer effectively dissipates internal heat.
Frequently Asked Questions (FAQ)
Q
What is Ti/Cu/Steel multilayer metal composite bar material?
Ti/Cu/Steel multilayer metal composite bar material is a high-performance engineered product consisting of three bonded metallic layers: an outer titanium (Ti) layer for corrosion resistance, a middle copper (Cu) layer for electrical and thermal conductivity, and an inner steel layer for structural strength. The layers are metallurgically bonded through methods such as explosive cladding or rolling cladding, creating a unified material with combined superior properties.
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What are the available specifications and cross-section shapes?
The composite bar material is available in rectangular (width 20–150 mm × thickness 6–30 mm), circular (Φ 8–50 mm), and square (10–30 mm) cross-section shapes. Clad materials include Titanium GR1, GR2, TA1, TA2, and stainless steel (304, 316L). Products can also be customized according to specific customer requirements.
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Why is a copper intermediate layer necessary in Ti/Cu/Steel composite material?
The copper intermediate layer serves as both a functional and structural transition layer. Because titanium and steel have significantly different crystal structures and thermal expansion coefficients, direct bonding between them is difficult and can produce brittle intermetallic compounds at the interface. Copper is compatible with both metals, effectively alleviating thermal stress, enhancing bonding strength, and also providing superior electrical and thermal conductivity as a primary conduction channel.
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In which industries is Ti/Cu/Steel composite bar material most commonly used?
The material is most widely used in high-end chemical and electrochemical industries (electrolytic electrodes), marine engineering and shipbuilding (grounding and cathodic protection systems), nuclear and conventional power generation, aerospace and defense applications (electromagnetic shielding and grounding), and scientific research equipment such as particle accelerators and synchrotron radiation facilities.
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What manufacturing standard does the composite bar material comply with?
The multilayer metal composite bar material is manufactured in accordance with the Chinese national standard GB/T 12769-2015. Baoji Special Steel Titanium Industry Co., Ltd. has over 25 years of experience in producing metal composite materials since 2001, with a fully established specialized production line dedicated to this product series.
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Can the composite bar material be customized for specific project requirements?
Yes. Products can be fully customized according to customer requirements, including specific dimensions, cross-section shapes, material grades for each layer (such as different titanium grades, copper types, or steel grades), and special bonding configurations. Customers are encouraged to contact the manufacturer directly to discuss their specific technical and dimensional requirements.