Baoji Ruihenghua Titanium Metal Composite New Materials Co., Ltd. is one of the leading manufacturers and suppliers of tantalum clad copper in China. If you're going to buy customized tantalum clad copper made in China, welcome to get more information from our factory. For price consultation, contact us.
Product Introduction
Tantalum clad copper (tantalum copper-coated rods/electrodes) is a high-end refractory bimetallic composite material prepared using explosive bonding and precision drawing/rolling processes. High-purity tantalum is uniformly coated on the outer layer of a copper rod substrate, achieving a 360° circumferential gapless metallurgical bond. The product combines the strong acid and crevice corrosion resistance of industrial pure tantalum with the high electrical and thermal conductivity of copper. The outer tantalum layer isolates the corrosive medium, while the inner copper core ensures high-current, low-resistance conduction and efficient heat dissipation. Compared to pure tantalum rods, tantalum-clad copper reduces material costs by 70%-85% while maintaining identical contact surface corrosion resistance. Simultaneously, it significantly improves overall conductivity and heat dissipation, solving the industry pain points of poor conductivity and high cost associated with pure tantalum. It is widely used as conductive electrodes, cathode rods, and corrosion-resistant conductive components in high-acid electrolysis, semiconductor manufacturing, and precious metal extraction, making it an irreplaceable core functional material for high-end, highly corrosive conductive applications.
Product Parameter
Implement International Standards System
● General standard for composite processes: ASTM B898 (Standard Specification for Composite Materials of Reactive and Refractory Metals).
● Tantalum cladding material standard: ASTM B708 (Standard specification for tantalum and tantalum alloy sheets and bars).
● Copper matrix material standard: ASTM B187 (Standard specification for copper and copper alloy bars and profiles).
● Inspection and acceptance standards: EN 10204 3.1 Material certificate, ultrasonic flaw detection, metallographic cross-section bonding rate test.
Standard Material Grade
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Layered Structure |
Optional International Brands |
Operating Condition Adaptation Instructions |
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Tantalum anti-corrosion outer layer |
R05200 Industrial-grade pure tantalum (99.95% purity) |
Ideal for general-purpose, highly corrosive, and conductive applications; offers the best cost-performance ratio; higher purity electronic-grade tantalum is also available. |
|
Copper conductive core layer |
C11000 ETP copper, C10200 OFHC oxygen-free copper |
C11000: General-purpose conductive material; C10200: High-purity, low-impedance, for precision electronics/high-end electrolysis. |
Product Features and Applications
Product Advantages
The metallurgical bonding is seamless throughout the entire circumference, and the interface bonding is dense and uniform. Unlike the mechanical adhesion of electroplating and spraying, it has no risk of blistering, peeling or delamination during long-term use and can withstand deep processing such as drawing, bending and turning.
The outer tantalum material has extremely strong chemical stability and can withstand most strong corrosive media such as aqua regia, concentrated hydrochloric acid, concentrated sulfuric acid, and bromine water at room temperature. Its resistance to pitting corrosion and crevice corrosion is far superior to that of titanium and zirconium-clad materials.
The copper core layer ensures extremely low conductivity and efficient heat dissipation, solving the problems of poor conductivity and easy heat generation of pure tantalum electrodes. It is suitable for electrolysis conditions with high current continuous operation, making the equipment more stable.
Only the outer layer in contact with corrosion uses the precious and rare metal tantalum, while the interior uses highly conductive copper. Under the same corrosion resistance and conductivity, it saves 70%–85% of material costs compared to pure tantalum rods, significantly reducing equipment procurement and maintenance costs.
It supports secondary processing such as centerless grinding, turning, drilling, end welding, and irregular shape processing. It has high dimensional accuracy and controllable surface finish, and can be directly processed into finished electrodes for use.
Application Areas
Hydrometallurgy: Electrolytic cathode rods for precious metal extraction, electrodes for concentrated hydrochloric acid system electrolytic cells, and conductive components for hydrometallurgical processes.
Semiconductor industry: conductive electrodes for wafer etching equipment, conductive components for electronic-grade strong acid treatment devices.
Specialty electroplating: insoluble anode/cathode conductive rods for hard chrome plating and precious metal plating.
Analytical instruments: working electrode for detecting corrosive media in the laboratory, and online corrosion monitoring probe.
Chemical and Environmental Protection: Conductive components for treating high-concentration strong acid wastewater, and corrosion-resistant conductive rods for hazardous waste disposal.
Cathodic protection: Auxiliary anode for impressed current cathodic protection in marine engineering and chemical equipment.
Product Details
Outer tantalum surface
Default acid-washed matte passivated surface, optional fine grinding and polishing (Ra≤0.8μm), suitable for high-precision working conditions.
01
End face treatment
The default is flat cut, but chamfering and tantalum cap sealing can be done to prevent the copper layer on the end face from being exposed to corrosive media.
02
Straightness
Standard grade ≤1.0mm/m, Precision grade ≤0.5mm/m.
03
Optional advanced processing services
We support customized end processing according to drawings, drilling and tapping, welding of terminals, forming of irregular electrodes, and tantalum layer sealing of end faces, and provide guidance on tantalum-copper dissimilar metal welding processes.
04
Product Supporting Documents
Authoritative International Qualification Certificates
ASTM B898 and ASTM B708 material testing reports, and original manufacturer material certificates in EN 10204 3.1 for each batch.
ISO 9001 Quality Management System Certification, ISO 14001 Environmental Management System Certification.
Third-party SGS test report on interface bonding strength, strong acid corrosion, and conductivity.
The high-purity tantalum material composition test report meets the purity requirements for electronic-grade applications.
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 tantalum-clad copper rods compared to solid tantalum rods?
A1: First, costs are significantly reduced: for the same corrosion resistance, tantalum-clad copper rods save 70%–85% of material costs compared to solid tantalum rods. Second, conductivity is superior: the copper core has a conductivity ≥97% IACS, far exceeding that of pure tantalum, resulting in lower heat generation under high current and more stable operation. Third, it is lighter, making equipment installation and maintenance easier.
Q2: How to treat the end face to prevent the copper core from being exposed in corrosive media?
A2: We offer two standard end-face sealing solutions: 1. Tantalum cap welding seal: A pure tantalum end cap is welded to the rod end face using tantalum welding wire, completely sealing the copper core. This is suitable for long-term immersion in highly corrosive media; 2. End-face coating: For mildly corrosive environments, a tantalum coating can be used for sealing. We can customize a solution according to your specific working conditions.
Q3: What is the recommended thickness of the tantalum cladding for long-term use in concentrated hydrochloric acid electrolysis?
A3: Under normal electrolysis conditions at room temperature, a 0.8–1.2 mm R05200 tantalum cladding can ensure a service life of over 8 years. Under conditions of high temperature, high current, and high impact corrosion, a 1.5–3 mm tantalum cladding is recommended to allow sufficient corrosion margin. We can provide accurate advice based on your specific medium concentration, temperature, and current density.
Latest company news
Ruihenghua Titanium upgraded its cladding rod production line, achieving standardized mass production of tantalum-clad copper and nickel-clad copper series.
Baoji Ruiheng Huatai Titanium Metal Composite New Materials Co., Ltd., located in Baoji City, China's "Titanium Valley," has completed the upgrade and transformation of its radial explosive welding and precision drawing production line for bimetallic clad rods, further expanding its mass production capacity for high-end conductive composite materials such as tantalum-clad copper and nickel-clad copper. With 20 years of experience in non-ferrous metal processing, the company is equipped with electron beam melting furnaces, vacuum annealing furnaces, and a complete set of precision machining equipment, mastering the entire process technology from composite material billet preparation to finished product deep processing. This production line adopts an integrated process of explosive welding billets and multi-stage precision drawing, equipped with an online wall thickness monitoring system, enabling 360° all-round metallurgical bonding, with radial wall thickness deviation controlled within ±0.05mm. Currently, the company can provide a full range of products from φ0.3mm fine wires to φ200mm large-diameter composite rods, with applications covering semiconductor etching, precious metal hydrometallurgy, high-end electroplating anodes, and chlor-alkali conductive components. The delivery cycle for customized products has been effectively shortened to 15-20 days, providing stable supply guarantees for high-end manufacturing and fine chemical customers worldwide.
Applications of tantalum-clad copper and nickel-clad copper electrodes in domestic hydrometallurgical and high-end electroplating projects.
Recently, our company's R05200 high-purity tantalum-clad copper electrolytic electrodes and Ni201 nickel-clad copper anode rods have been successfully applied in domestic precious metal hydrometallurgy and high-end hardware electroplating production lines, respectively, and have passed long-term field operation verification. The tantalum-clad copper electrode uses 99.95% high-purity tantalum coating and can operate stably for a long time in concentrated hydrochloric acid and mixed acid systems, with a service life more than three times that of traditional titanium electrodes. The nickel-clad copper anode rod has excellent alkali resistance and wear resistance, with a copper core conductivity ≥97% IACS, solving industry pain points such as low conductivity and easy overheating of pure nickel anodes. Field data shows that these two products can help customers reduce the overall cost of electrode materials by more than 40% while ensuring stable process performance.
Upgraded high-end coated conductor customization service, supporting one-stop customization solutions.
To meet the diverse needs of global semiconductor, electroplating, and metallurgical industry customers, our company has comprehensively upgraded its customized service system for tantalum-clad copper and nickel-clad copper products. We provide full-cycle technical support, from material grade selection and cladding thickness design to irregular shape processing and end-face sealing welding. We can also customize finished components such as irregularly shaped electrodes, conductive terminals, and transition connectors according to customer drawings. Each batch of products can be issued with an EN 10204 3.1 factory test certificate and supports third-party testing such as SGS. The company has independent import and export qualifications and has established a complete global supply and service system covering Europe, Southeast Asia, North America, and other regions, committed to providing high-performance bimetallic composite conductive solutions for high-end manufacturing customers worldwide.
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