Active Member
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[China]
Address: Rm.2009,20th Floor,Unit C,Yuhong Plaza,No. 61 Zijingshan Road，Zhengzhou,China
Contact name:Ailsa
Zhengzhou Sanhui Refractory Metal Co., Ltd. |
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Copper Tungsten WCu Alloy Precision Parts with High Temperature and Arc Resistance
Tungsten Copper Alloy types,chemical compositions and main properties:
| Grade | Density: g/cm3 | Tensile Strength/Mpa | Hardness (HB) | Conductivity %IACS | Main Applications | |
| Room Temperature | 1600℃ | |||||
| WCu7 | 17.3~17.8 | 400~750 | 50~120 | 280 | ≥26 | Nozzle, gas rudder |
| WCu10 | 16.8~17.3 | 400~700 | 60~100 | 260 | ≥27 | Nozzle, gas rudder |
| WCu15 | 16.0~16.5 | 300~600 | / | 240 | ≥30 | component, barium salt electronic cathode |
| WCu20 | 15.1~15.5 | / | / | 220 | ≥34 | Contact, electrode |
| WCu30 | 13.7~14.2 | / | / | 175 | ≥42 | Contact, electrode |
| WCu40 | 12.7~13.2 | / | / | 140 | ≥47 | Contact, electrode |
| WCu50 | 11.7~12.2 | / | / | 115 | ≥55 | Contact, electrode |
No arc erosion: With the right mix of materials.
By choosing the right mixture of tungsten and copper, we are able to influence the product's arc erosion properties. At a tungsten content of 80 %, we achieve the lowest arc erosion rates. Depending on the voltage and current intensity as well as on economic considerations, we can vary the tungsten content between 60 and 90 % to meet the exact needs of your application. |
CuW50 and CuW55 have the lowest Tungsten contents. They are both good switching and contact materials for oil filled devices. CuW55 is also used for arcing contacts in oil circuit breakers and arcing edges of selectors and switchblades in transformer tap changers.
CuW65 and CuW70 are used as contact materials in severe arcing applications including gas, oil and some air circuit breakers. They are also used for arcing edges on selectors and reversing switch blades.
CuW75 and CuW80 are used as contact materials under extreme arcing conditions. Applications include arcing contacts in gas and oil circuit breakers, contactors and transformer tap changers, arcing plates and arc runners in power switching equipment.
CuW85 and CuW90 have the highest Tungsten content. They are used as contact materials where resistance to contact welding, sticking and arc erosion are critical. They also provide satisfactory heat and current interruption capabilities. Typical applications are power vacuum switches and high power spark gap electrodes, etc..
