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  • High Electrical Conductivity: Cu-W Sintered offers excellent electrical conductivity, making it ideal for applications where electrical performance is critical.
  • Arc Resistance: This high copper alloy is highly resistant to arc damage, making it suitable for applications involving electric arcs, such as circuit breakers and arcing tips.
  • Durable and Long-Lasting: Known for its durability and ability to withstand demanding conditions, ensuring long-lasting performance.
  • Versatile Applications: It is widely used as resistance welding electrodes, EDM electrodes, circuit breakers, and heavy-duty contacts.
Properties and Specifications

Cu-W Sintered is a high-performance refractory alloy known for its outstanding properties. This alloy combines copper’s excellent electrical and thermal conductivity with the impressive arc resistance and non-welding properties of tungsten and molybdenum. Produced using advanced powder metallurgy techniques, it has a uniform and fine-grained microstructure resulting in exceptional performance and durability. Its superior quality ensures that it exceeds the standards specified by the Resistance Welder Manufacturers’ Association (RWMA), making it an ideal choice for a wide range of applications, including resistance welding electrodes, EDM electrodes, circuit breakers, arc tips and heavy duty contacts. The high copper alloy excels in these demanding applications due to its ability to withstand arc effects and high currents, making it a reliable and durable material.


Cu-W Sintered is a versatile and high-performance refractory alloy used in a wide variety of industries. Its exceptional combination of electrical conductivity and arc resistance makes it an indispensable choice for various applications. Common uses include as resistance welding electrodes, where it excels in its ability to withstand high current and provide stable performance. In addition, the alloy is well suited for electrical discharge machining (EDM) electrodes, circuit breakers, arc tips and heavy duty contacts in a variety of environments. Whether it’s ensuring reliable connections or withstanding the effects of arcing, Cu-W Sintered consistently performs in demanding applications, making it the material of choice for many critical functions.

Best used

For resistance welding electrodes, EDM electrodes, circuit breakers, arcing tips, heavy-duty contacts, make-and-break contacts.

Ideally suited for

Electrode material for resistance welding and related applications for heavy duty contact applications.

Document Downloads

CuW Sintered E
CuW Sintered E US
AMPCO® Special Alloys Application

Dimensional Capabilities

View our product dimensional capabilities.

Dimensional Capabilities

Mechanical Properties Composition

These are nominal values as these tables are used for comparative purposes. If specific figures are required, please go to the product page and download the technical data sheets for exact specs.

D kg/dm3
Rm Mpa
RP 0,5 Mpa
A5 %

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