Copper tungsten alloy sheet W80Cu20

Tungsten copper alloys are used where the combination of high heat resistance, high electrical and/or thermal conductivity, and low thermal expansion are needed. Some of the applications are in electric resistance welding, as electrical contacts, and as heat sinks. As contact material the alloy is resistant to erosion by electric arc. WCualloys are also used in electrodes for electrical discharge machining and electrochemical machining.

Advantages

Higer thermal conductivity

Low thermal expansion

High arc resistance combined with good electrical conductivity

Applications

1.Heat Sinks
The CuW75 tungsten copper alloy is used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-power electronic devices. As a tungsten copper material, it's a composite, so both the thermal advantages of copper and the very low expansion characteristics of tungsten can be utilized.
The combination of tungsten & copper materials results in thermal expansion characteristics similar to those of silicone carbide, aluminum oxide, and beryllium oxide, used as chips and substrates. Because of tungsten copper's thermal conductivity and expansion characteristics, Tungsten copper alloy works well in densely packed circuits.

2.Resistance Welding
The high physical and mechanical properties, as well as the thermal and electrical conductivity, of refractory metal composites make tungsten copper alloy very suitable for die inserts and electrode facings, flash and butt welding dies, and hot upsetting. They can also solve heat balance problems.

3.Electrical Contacts
Electrical contacts are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Our tungsten copper materials are used owing to their unique physical properties.

4.EDM and ECM
Tungsten copper alloys are used worldwide for EDM (Electrical Discharge Machining) and ECM (Electrochemical Machining) electrodes. All material is manufactured by the press, sinter, and infiltrate process. Virgin tungsten powders are used, resulting in a consistent homogeneous material giving high and even burning rates. Tungsten copper is used in plunger/sinker applications where intricate definition is required, especially in tungsten carbide.

5. Electrodes for Spark Erosion
Our WCu electrodes are best suitable for EDM machining of those materials.
Types of product: rods, tubes and plates

Tungsten CopperTechnical Data

Zhuzhou Jiabang Refractory Metal Co.,Ltd, founded in year 2008, has an area coverage of 12000m2. Its registered capital is RMB 30 million. 
Zhuzhou Jiabang Refractory Metal Co.,Ltd is devoted in research and production of products in electronics area, medical area, new energy industry and aeronautical and space industries etc.
The main products are pure tungsten, pure molybdenum, tungsten copper, molybdenum copper, Cu/Mo/Cu (CMC), Cu/MoCu/Cu (CPC) and tungsten heavy alloy etc., 
JB possesses a highly-qualified technical team which has solid theoretical guidance and extremely rich practising experience in the aspects of powder metallurgy, press processing and shape processing. Besides, an energetic technical team with appropriate ages is full of powerful creative spirits and exploratory capabilities.
From year 2014, we have begun the reseach and development for hermetic package materials and heat sink materials. And until now, we have input about RMB 15 million to upgrade the machines. With years of development, the properties of heat sinks have already reached the international quality level.

JBNR will continuously hold the belief of "customer foremost, requirements fulfilled, improvement continued, and world class pursued" and cooperate closely with customers, contriving to gain a win-win situation and develop together with customers in the fierce market competition. Welcome people from all fields and customers from abroad and home to consult technology, do business and cooperate together.