Zhuzhou Jiabang Refractory Metal Co., Ltd
5 1

Heat Resistant Copper Tungsten Alloy Electrode Heat Sink Tungsten Copper Switch Contact

Contact Now* Send an Inquiry to this supplier.
Start Order * Name your price

Contact us

Zhuzhou Jiabang Refractory Metal Co., Ltd

No.5 Building, No.581 Heilong Jiang Road, Li Yu Industrial Park, Tian Yuan District, Zhuzhou, Hunan, Zhuzhou Hunan
Contact name

Quick Information

  • Brand Name: JBNR
  • Place of Origin: China
  • Model Number : customization as requirements


Tungsten Copper Alloy


By selecting high purity tungsten and oxygen-free copper, all of our tungsten copper alloys are produced by sintering and infiltrating process.

In terms of different types, the composition of tungsten and copper are well-proportioned and accurate percentaged.

The proportion of cooper accounts for 10% to 50%.

Tungsten copper alloy possesses excellent properties from both tungsten and copper.

It is of high arc resistance, good electrical conductivity, high thermal conductivity, low thermal expansion as well as high wear resistance characteristics.


1. Tungsten copper alloy is widely used in many industrial areas such as aerospace, power, electronic, metallurgy, and machinery.
2. This tungsten alloy product is also used as heat sinks for cooling device in electronic equipment and electronic packaging materials.
3. Tungsten copper alloy is also adopted as electrodes for resistance welding.
4. It can be used as the component of the pushing device in spacecrafts.
5. This tungsten alloy product can be used for producing arcing contacts and vacuum contacts in high and medium voltage breakers.


Tungsten-Copper alloy is the composite of Tungsten and Copper, which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity, excellent thermal and electrical conductivity.

It is easy to be machined.

It is used widely in such industries as engine, electrical power, electron, metallurgy, spaceflight and aviation.

Using CIP formation, sintered tungsten skeleton and infiltrating copper (silver) technology, large size and special shape products of tungsten-copper (silver) composites with 6-90 percent of copper are produced, such as electric contacts, electrode, refractory parts, heat sinks and parts of rocket.

We can also produce sheet material, tubing, plate and other small products by mould pressing, extrusion pressing and MIM.

Main Specifications of W-Cu Composite

Type Density g/cm3 Conductivity %IACS HB MPa Size mm
WCu50 11.9~12.3 ≥55 1130~1180 Tube: Ø3~390
Special type:
WCu40 12.8~13.0 ≥47 ≥1375
WCu30 13.8~14.4 ≥42 ≥1720
WCu20 15.2~15.6 ≥34 ≥2160
WCu10 16.8~17.2 ≥27 ≥2550
WCu7 17.3~17.8 ≥26 ≥2900


Tungsten Copper Switch Contact


Tungsten Copper Electrode


Tungsten composites 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 powders are used, resulting in a consistent homogeneous material giving high and even burning rates.

Copper tungsten is used in plunger/sinker applications where intricate definition is required, especially in tungsten carbide.


Resistance Welding
The high physical and mechanical properties, as well as the thermal and electrical conductivity, of refractory metal composites make these materials very suitable for die inserts and electrode facings, flash and butt welding dies, and hot upsetting.

They can also solve heat balance problems.

Content Density g/cm³ Hardness HRB Conductivity %IACS Class RWMA
W50Cu50 ≥11.9 ≥65 ≥54
W55Cu45 ≥12.5 ≥70 ≥49 10 10.7445
W70Cu30 ≥14.1 ≥82 ≥42
W75Cu25 ≥14.5 ≥90 ≥38 11 11.744
W80Cu20 ≥15.2 ≥100 ≥34 12 12.7435
W85Cu15 ≥15.9 ≥240HB ≥30
W90Cu10 ≥16.75 ≥260HB ≥27




Tungsten Copper Heat Sink

BNR developed CuW75 to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-power electronic devices.

As a copper tungsten 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 these two materials results in thermal expansion characteristics similar to those of silicone carbide, aluminum oxide, and beryllium oxide, used as chips and substrates. Because of its thermal conductivity and expansion characteristics, it works well in densely packed circuits.



JBNR developed CuW70,CuW80 contacts with applications as following:
·arcing contacts and plates
·arc runners
·current carrying members
·blade facings
All of our materials are produced by the press, sinter, and infiltrate process.
Each manufacturing step, including the basic powder, is closely controlled, monitored, and signed off on by Quality Assurance.
After completion, all manufactured lots are checked for conductivity, density, and hardness prior to shipping.
This information is recorded and kept on file, and also accompanies the parts or materials when requested.


Established in 2008, Zhuzhou Jiabang Refractory Metal Co., Ltd. is a professional manufacturer and supplier of tungsten alloy products in China.

Among that, tungsten copper alloy is one of our company's main products.

It is guaranteed in quality based on ISO9001-2008 international quality administrative system certification. If you are interested in this product, please feel free to contact us.


Product Image

  • Heat Resistant Copper Tungsten Alloy Electrode Heat Sink Tungsten Copper Switch Contact image

Related products from premium suppliers on EC21

Send an Inquiry to this supplier

Send an Inquiry to this supplier
* From
  To Xu
Zhuzhou Jiabang Refractory Metal Co., Ltd
* Buying Product
- Please enter your specific buying item.
e.g. 42 inch LCD TV, leather executive chair
Category : Flanges
* Message

Use English only Max. 2000 characters. (Min. 20)