Tungsten Copper Alloy Rods

Tungsten Copper Alloy Rods are composite materials composed of tungsten and copper, manufactured through a powder metallurgy process. Typically, tungsten powder and copper powder are mixed, then pressed and sintered, followed by copper infiltration to fill the pores between the tungsten particles.

Copper tungsten (CuW, WCu) has been recognized as a highly conductive and erasion resistant composite material that is extensively used as copper tungsten electrodes in EDM machining and resistance welding applications, electrical contacts in high voltage applications, and heat sinks and other electronic packaging materials in thermal applications.

The most common tungsten/copper ratios are WCu 70/30, WCu 75/25, and WCu 80/20. Other common compositions include tungsten/copper 50/50, 60/40, and 90/10. The range of available compositions is from Cu 50 wt.% to Cu 90 wt.%. Our tungsten copper product range includes copper tungsten rod, foil, sheet, plate, tube, tungsten copper rod, and machined parts.

High Electrical Conductivity: Tungsten copper alloy rods exhibit electrical conductivity between that of pure tungsten and pure copper, offering relatively high conductivity for efficient current transmission. For example, a tungsten-copper alloy with 70% tungsten content can achieve an electrical conductivity of around 20% IACS (International Annealed Copper Standard), making it well-suited for high-current-density applications.

High Thermal Conductivity: The alloy also possesses excellent thermal conductivity, enabling efficient heat dissipation and ensuring stable operating temperatures. For instance, a 50% tungsten-copper alloy typically has a thermal conductivity of approximately 200 W/m·K, making it highly advantageous in applications requiring superior heat dissipation.

Low Thermal Expansion Coefficient: Tungsten copper alloy rods have a low thermal expansion coefficient, generally ranging from 5×10⁻⁶ to 10×10⁻⁶/K, meaning they undergo minimal dimensional changes under temperature variations. This ensures high dimensional stability, making them suitable for precision applications.

High Strength and Hardness: Tungsten copper alloy rods exhibit high mechanical strength and hardness, allowing them to withstand significant mechanical stress. Their tensile strength typically ranges from 500 to 1200 MPa, with hardness between 150 to 350 HB, making them ideal for high-load and high-wear applications.

Excellent Wear Resistance and Arc Erosion Resistance: Due to tungsten's hardness and copper's arc-resistant properties, tungsten copper alloy rods demonstrate outstanding wear resistance and arc erosion resistance, ensuring prolonged service life in demanding conditions.

Good Machinability: Tungsten copper alloy rods can be precisely machined (via turning, milling, drilling, etc.) into complex shapes to meet specific application requirements. Their machinability is superior to pure tungsten but slightly lower than pure copper, requiring appropriate cutting tools and machining parameters.

Weldability: In certain applications, tungsten copper alloy rods can be welded to other metals. However, proper welding techniques and filler materials must be selected to ensure joint strength and quality.

Aerospace Applications

Rocket Nozzles and Thrust Chambers: Tungsten copper alloy rods are used to manufacture critical components in rocket nozzles and thrust chambers, which must operate under extreme temperatures (up to 3000°C) and high pressure. Their high melting point and excellent thermal conductivity efficiently dissipate heat, preventing overheating and ensuring reliable rocket engine performance.

Jet Engine Components: In jet engines, tungsten copper alloy rods are utilized in high-temperature components such as nozzles and combustion chamber liners. Their low thermal expansion coefficient and high strength enable them to withstand thermal and mechanical stresses, enhancing engine efficiency and durability.

Electronics Industry

Heat Sink Materials: In passive cooling systems for electronic devices, tungsten copper alloy rods serve as heat sinks, effectively conducting and dissipating heat generated by components. For example, they are used in CPU cooling modules for high-performance computers and cooling systems for high-power lasers, where their high thermal conductivity and low thermal expansion make them an ideal choice.

Electrical Contacts and Terminals: Due to their high electrical conductivity and excellent arc resistance, tungsten copper alloy rods are employed in high-power electrical contacts and terminals. These components must operate under high current density and voltage, and the alloy ensures reliable performance and extended service life.

Energy Sector

Solar Cells and Fuel Cells: Tungsten copper alloy rods are used in electrodes and interconnects for solar cells and fuel cells. Their resistance to high temperatures and corrosion ensures stable long-term performance, improving energy conversion efficiency.

Nuclear Energy Applications: In nuclear reactors, tungsten copper alloy rods are used in fuel elements and control rods for high-temperature components. Their high melting point and radiation resistance allow them to operate reliably in extreme nuclear environments, ensuring reactor safety and stability.

Metallurgy and Mining

High-Temperature Processing Equipment: In metallurgical and mining applications, such as smelting furnaces and refining chambers, tungsten copper alloy rods are used in critical components. Their high-temperature and wear resistance withstand the erosion of molten metals, extending equipment lifespan and improving production efficiency.

Manufacturing and Industrial Processes

Resistance Welding Electrodes: In resistance welding, tungsten copper alloy rods serve as electrode materials. Their high arc resistance and electrical conductivity ensure consistent welding quality, making them suitable for high-current-density applications, such as automotive and aerospace component welding.

Mold Manufacturing: In mold production, tungsten copper alloy rods are used for high-temperature components like hot stamping and forging dies. Their high strength and thermal conductivity enable them to endure extreme heat and mechanical stress, enhancing mold durability and production efficiency.

FAQ

Are you a factory ?

Yes, we are factory but we generally use our trading company to handle the business abroad. It will be convenient to receive the remittance and arrange the shipment.

What is the MOQ of Tungsten Copper Alloy Rods?

A: Depends on quantity, generally, no MOQ limit.

How to pay for it?

A: A bank transfer (T/T) will be acceptable.

What is the delivery time?

A: around 7-20 days which depends on the quantity and production.

What is kind of the package?

A: generally, we use cartoon case or plywood case and with protective material inside to make sure the save of cargo

What is the lead time?

A: from order placed to cargo receiving will take around 10-25 days.

What is the delivery method?

A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.

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