Baoji Ruihenghua Titanium Metal Composite New Materials Co., Ltd. is one of the leading manufacturers and suppliers of stainless steel clad copper clad steel in China. If you're going to buy customized stainless steel clad copper clad steel made in China, welcome to get more information from our factory. For price consultation, contact us.
Product Introduction
Stainless steel-clad copper-clad steel is a high-performance three-layer bimetallic composite material prepared using explosive welding and precision drawing processes. From the outside in, it consists of a stainless steel anti-corrosion and wear-resistant layer, a pure copper conductive transition layer, and a carbon steel load-bearing core layer. All three layers achieve 360° circumferential metallurgical bonding. Unlike double-layer composite rods, this three-layer design perfectly integrates three core performance characteristics: the outer stainless steel layer provides excellent corrosion and wear resistance, the middle copper layer ensures high electrical and thermal conductivity, and the central steel core provides high-strength structural support and cost-effectiveness. Compared to pure copper rods, material costs are reduced by 40%-60% while meeting conductivity requirements, and structural strength is higher; compared to pure stainless steel rods, conductivity is improved by more than 3 times. It is widely used in electrolytic smelting cathode beams, electroplating fixtures, conductive rollers, grounding electrodes, and anti-corrosion conductive structural components, making it a cost-effective solution for anti-corrosion conductive structural applications.
Product Parameter
Implement International Standards System
● Stainless steel outer layer standard: ASTM A240 (Standard Specification for Austenitic Stainless Steel Plate/Bar).
● Copper interlayer standard: ASTM B187 (Standard Specification for Copper and Copper Alloy Rods and Profiles).
● Carbon steel core layer standard: ASTM A36 (Standard Specification for Structural Carbon Steel).
● Composite processes and testing: Specifications for explosive welding of dissimilar metals, and standards for ultrasonic flaw detection.
Standard Materials And Structural Parameters
|
Layered Structure |
Optional International Brands |
Functional And Operating Condition Adaptation |
|
Stainless Steel Outer Layer |
304 (UNS S30400), 316L (UNS S31603) |
304: General purpose, suitable for weak acids and alkalis, atmospheric corrosion, and wear-resistant applications; 316L: Resistant to chloride ions, suitable for marine chemical applications, and highly corrosive applications. |
|
Copper Intermediate Layer |
C11000 ETP Copper |
A conductive and thermally conductive transition layer ensures overall conductivity; its thickness can be adjusted to control conductivity. |
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Steel Core Substrate |
A36 Structural Carbon Steel |
Provides structural strength, reduces overall cost, and adapts to load-bearing and stress conditions. |
Product Features and Applications
Product Advantages
The three-layer integrated design combines three performance characteristics : through metallurgical integration, it combines the three major advantages of stainless steel (corrosion and wear resistance), copper (high electrical and thermal conductivity), and carbon steel (high strength and low cost), solving the pain points of "incompatibility between electrical conductivity and strength" and "difficulty in balancing corrosion resistance and cost" in double-layer composite rods. One material simultaneously meets the triple requirements of corrosion resistance, electrical conductivity, and load-bearing capacity.
Dual-interface full metallurgical bonding, stable and reliable performance : Explosive welding + precision drawing process achieves atomic-level metallurgical bonding of dual interfaces. The bonding strength is far higher than mechanical coating and electroplating coating. There is no risk of blistering, peeling or delamination during long-term use. It can withstand deep processing such as drawing, bending and turning. The conductivity is continuously stable.
Extremely high cost performance and lower overall cost : Only the functional outer layer and conductive layer use precious metals, while the main body is supported by low-cost carbon steel. Under the same conductivity and corrosion resistance, it saves 40%-60% of material costs compared to pure copper rods, and improves conductivity by more than 3 times compared to pure stainless steel rods. At the same time, it greatly improves structural strength, resulting in significant comprehensive benefits in the long term.
Flexible thickness ratio customization : The thickness ratio of stainless steel layer, copper layer and steel core can be flexibly adjusted according to working conditions: the copper layer can be thickened for high conductivity requirements, the stainless steel layer can be thickened for heavy corrosion conditions, and the steel core ratio can be increased for high load-bearing conditions, accurately matching the performance requirements of different scenarios.
Excellent secondary processing capability : It supports deep processing such as centerless grinding, turning, drilling, bending, welding, and surface passivation, and can be directly processed into finished conductive hangers, conductive beams, electrode tips and other components, with a matching exclusive welding process solution.
Application Areas
Electrolytic metallurgy: Electrolytic copper/zinc/nickel cathode conductive beams, electrolytic cell conductive rods, and hydrometallurgical conductive components.
Electroplating industry: Electroplating line hanger main rod, conductive roller, hanger beam, suitable for acid and alkaline electroplating solution environments.
Power industry: grounding electrodes, lightning protection conductive rods, conductive components of switchgear, and conductive busbars for high-power equipment.
Rail transit: conductive connectors for vehicles, pantograph components, and conductive parts for signaling systems.
Marine engineering: conductive structural components for seawater environments, auxiliary anodes for cathodic protection, and corrosion-resistant conductive supports.
Chemical equipment: conductive components for corrosion-resistant equipment, conductive lead-out rods for reactors, and conductive parts for heat exchange equipment.
Product Details
Outer stainless steel surface
Default is pickled and passivated surface, with optional fine grinding and polishing or brushed finish to suit different working conditions.
End face treatment
Default is flat cut, but chamfering and stainless steel sealing treatment can be performed to prevent the copper and steel layers on the end face from being exposed to corrosive media.
Straightness
Standard grade ≤1.0mm/m, Precision grade ≤0.5mm/m.
Product Supporting Documents
Authoritative International Qualification Certificates
ASTM A240, ASTM B187, and ASTM A36 material testing reports are provided, and each batch is issued with an original manufacturer's material certificate in EN 10204 3.1.
ISO 9001 Quality Management System Certification, ISO 14001 Environmental Management System Certification.
Third-party SGS test report on the bonding strength, conductivity, and corrosion resistance of the dual interfaces.
The company possesses testing qualifications for materials used in the electrolysis and electroplating industries, and meets the requirements for conductive and corrosion-resistant working conditions.
thoughtful service
Packaging Standards (For Export By Sea)
Each product is individually wrapped with a PE protective film and pearl cotton, and a plastic protective cap is added to the end.
The entire batch was packed into fumigated solid wood export crates, with the interior filled with shock-absorbing foam and moisture-proof desiccant.
The wooden crates are labeled with material grade, specifications, number of pieces, gross weight, and moisture-proof/lifting markings, suitable for all scenarios including sea, land, and air transport.
Professional Consultation Q&A
Q1: What are the core advantages of this triple-layer stainless steel-copper clad steel bar compared to double-layer stainless steel-clad or copper-clad steel bars?
A1: Two-layer materials can only offer two properties: stainless steel clad steel provides corrosion resistance and strength, but poor conductivity; copper clad steel provides conductivity and strength, but poor surface corrosion resistance. A three-layer design, however, offers all three advantages: the outer stainless steel layer provides corrosion resistance and wear resistance, the middle copper layer ensures high conductivity, and the inner steel core provides structural strength. It can adapt to working conditions requiring corrosion resistance, conductivity, and load-bearing capacity simultaneously, something no two-layer composite material can achieve.
Q2: How to ensure the reliability of the bond between the two interfaces? Will delamination occur during long-term bending and stretching?
A2: We employ explosive welding technology to achieve atomic-level metallurgical bonding at the stainless steel-copper and copper-steel interfaces, resulting in shear strength far exceeding that of mechanical cladding and electroplating. Each batch of products undergoes 100% ultrasonic testing of both interfaces, and metallographic sections are extracted for shear strength testing. The interfaces are free of pores and gaps, and will not delaminate under normal bending, tension, and long-term use. We can provide corresponding test reports for each batch of products.
Q3: How to choose between 304 and 316L stainless steel outer layers based on different working conditions?
A3: 304 stainless steel is suitable for general weak acid and weak alkali electroplating solutions, atmospheric corrosion, and general wear-resistant working environments, offering a high cost-performance ratio. 316L stainless steel, with the addition of molybdenum, has better resistance to chloride ions, seawater, and organic acids, making it suitable for marine environments, the chemical industry with high chloride ion content, and heavily corrosive working environments. We can provide accurate recommendations based on your specific media composition and operating environment.
Latest company news
Mass production of three major series of three-layer composite conductive rods has been launched, further expanding Ruihenghua Titanium Composite Materials' product portfolio.
Baoji Ruihenghua Titanium Metal Composite New Materials Co., Ltd., based on 20 years of experience in non-ferrous metal composite processing in China's Titanium Valley, has officially expanded its product line to include three-layer composite bars, building upon its existing double-layer composite materials. The three core products-titanium-clad copper-clad steel, stainless steel-clad copper-clad steel, and nickel-clad copper-clad steel-have achieved standardized mass production.
The entire product series employs radial explosive welding and precision drawing processes, achieving complete metallurgical bonding at both interfaces. This perfectly integrates three core properties: surface corrosion and wear resistance, high electrical and thermal conductivity in the middle layer, and high structural strength in the core layer. The entire process strictly adheres to ASTM international standards, with shear strength at both interfaces exceeding industry benchmarks. Compared to pure copper rods, material costs are reduced by 40%-60% while meeting conductivity requirements, while providing higher structural strength. Compared to single-layer composite steel rods, conductivity and surface corrosion resistance are significantly improved. Currently, the annual production capacity of the three-layer composite rod series reaches 650 tons, covering all specifications from φ5mm to φ200mm, providing high-performance conductive structural material solutions for customers in the global hydrometallurgy, electroplating, power, and rail transportation industries.
Full-scale customized service officially launched, precisely matching diverse working conditions.
In response to the diverse needs of global customers for conductivity, corrosion resistance, and load-bearing capacity, the company has officially launched a three-layer composite rod full-dimensional customization service system.
Customers can flexibly choose the outer layer material according to the usage environment: titanium outer layer for strong acid electrolysis and electroplating scenarios, 304/316L stainless steel outer layer for general corrosion-resistant and wear-resistant scenarios, and nickel outer layer for strong alkali and high-temperature oxidation scenarios. The thickness ratio of the outer corrosion-resistant layer, the middle copper conductive layer, and the inner steel core layer can all be adjusted as needed to precisely match multiple requirements for conductivity, strength, and corrosion resistance. In addition, we support the customized production of flat bars, square bars, irregular cross-sections, conductive brackets, busbars, and other finished components, and provide welding process guidance to help customers optimize material costs and extend equipment life.
Three-layer composite bars are accelerating their global market expansion, supported by complete export qualifications and after-sales guarantees.
With its independent import and export qualifications for goods and technology, the company's three-layer composite bar series has been supplied to markets in Europe, Southeast Asia, North America, and the Middle East, and has been applied in batches in multiple fields such as hydrometallurgy, metal electroplating, and power transmission.
Each batch of products comes with an original EN 10204 3.1 material certificate and supports testing by third-party organizations such as SGS and BV. The company collaborates with internationally renowned logistics carriers, providing diversified delivery solutions including sea freight, air freight, and China-Europe freight trains. It also offers 24/7 online technical support, covering the entire process from on-site welding guidance and routine maintenance to troubleshooting. Leveraging its integrated industrial chain advantage from composite substrates to finished product processing, the company is committed to becoming a reliable long-term supplier of multilayer composite conductive materials for global customers.
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