Home> Company News> How to Select WCu Grade for Your Application?

How to Select WCu Grade for Your Application?

2026,03,28
Choosing the right Tungsten Copper (WCu) grade is critical to performance, service life, and cost efficiency. The ideal grade depends on your priority: conductivity, heat resistance, hardness, or arc erosion resistance.
 
 

Understand Tungsten-Copper Ratio Logic

 
Higher tungsten content → higher hardness, better high-temperature stability, stronger arc resistance.
 
Higher copper content → better electrical and thermal conductivity, easier machining.
 
 

WCu70 (70% W, 30% Cu)

Best for: General electrical parts, low-voltage contacts, simple EDM electrodes

Strengths: Highest conductivity in standard WCu grades, easy to machine

Avoid: Extreme high-temperature or heavy arcing environments

 
 

WCu75 (75% W, 25% Cu)

Best for: Medium-load electrical contacts, welding electrodes, general EDM electrodes

Balance: Good conductivity + decent wear resistance

Most versatile grade for common industrial applications

 
Tungsten copper alloy
WCu80 (80% W, 20% Cu)
Best for: High-voltage switchgear, EDM electrodes for carbide, resistance welding
Strengths: Strong anti-arc performance, high density, stable at high temperatures
Industry standard for electrical and thermal management parts
 
WCu85 / WCu90 (85%–90% W)
Best for: Heavy arcing contacts, aerospace components, heat sinks, military parts
Strengths: Extreme hardness, excellent ablation resistance, ultra-high density
Trade-off: Lower conductivity, more difficult to machine
 
Quick Selection Guide
Need max conductivity: Choose WCu70
Need balanced performance: Choose WCu75 / WCu80
Need high temperature & arc resistance: Choose WCu85 / WCu90For EDM or welding: WCu80 is most widely recommended
For aerospace & heavy-duty electronics: WCu85 or WCu90
 
 
If you need custom performance, we can also provide tailored tungsten copper compositions to meet your specific application requirements.
Contact Us

Author:

Mr. zengzheng

Phone/WhatsApp:

+86 18973369812

Popular Products
You may also like
Related Information
What are the characteristics and advantages of tungsten alloy sheets?

Tungsten alloy is a very important metal material widely used in industrial fields. Tungsten alloy sheet, as a form of tungsten alloy, has unique characteristics and advantages. What are the...

What is the environmental performance and sustainable development significance of tungsten alloys?

Tungsten alloy is a material made by alloying tungsten with other metal elements. It has a high melting point, hardness, and density, as well as good corrosion resistance and high temperature...

What are the characteristics and uses of high density tungsten alloy plates?

High density tungsten alloy plate is a type of alloy plate mainly composed of tungsten, which has high density and excellent physical and chemical properties. The editor of tungsten alloy...

The selection and usage techniques of tungsten alloy fish weight revealed

Tungsten alloy fishing weight is one of the commonly used equipment in fishing, which has the advantages of moderate weight, durability, and corrosion resistance. It is very important to choose the...

Related Categories

Email to this supplier

Subject:
Email:
Message:

Your message must be between 20-8000 characters

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send