Owing to the good performance of electrical conductivity, tungsten copper contact can be used as electrical contact material, The high electrical and thermal conductivity of copper are combined with the arc-resistant and non-welding properties of tungsten or their carbides to form an extensive series of compositions. Each is designed to give the best performance for your particular application.
We are able to influence the copper tungsten contacts’ arc erosion properties by choosing the right mixture of tungsten and copper. With tungsten content reaching at 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 50 and 93 % to meet the exact needs of clients' application.
For switch contacts, we also have copper tungsten carbide contacts or CuWC contacts for your inquiry. With high density, high strength and hardness, arc wear resistance, copper tungsten carbide contacts is wildly used as the electrical contact and electrode too.
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 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. You can use our tungsten copper switch contact without any worry.
1.heat-resistant
2.ablate-resistant
3.high-intensity
4.excellent thermal andelectrical conductivity
5.easy to be machined
Application:
Switch contacts, high voltage circuit breakers, medium voltage circuit breakers, air & oil immersed (SF6 circuit breakers)
Tungsten copper arcing tips or copper tungsten arc runners
Make & break contacts
Heavy duty conductors, relays & switches.
| Type | Chemical composition (wt%) | Density | Hardness | Resistivity | IACS | Bending strength | ||
| Cu | Total impurity content(≤) | W | g/cm3 (≥) | HB Kgf/mm2 ( ≥) | μΩ.cm (≤) | % (≥) | MPa (≥) | |
| W50/Cu50 | 50±2.0 | 0.5 | balance | 11.85 | 115 | 3.2 | 54 | -- |
| W55/Cu45 | 45±2.0 | 0.5 | balance | 12.3 | 125 | 3.5 | 49 | -- |
| W60/Cu40 | 40±2.0 | 0.5 | balance | 12.75 | 140 | 3.7 | 47 | -- |
| W65/Cu35 | 35±2.0 | 0.5 | balance | 13.3 | 155 | 3.9 | 44 | -- |
| W70/Cu30 | 30±2.0 | 0.5 | balance | 13.8 | 175 | 4.1 | 42 | 790 |
| W75/Cu25 | 25±2.0 | 0.5 | balance | 14.5 | 195 | 4.5 | 38 | 885 |
| W80/Cu20 | 20±2.0 | 0.5 | balance | 15.15 | 220 | 5 | 34 | 980 |
| W85/Cu15 | 15±2.0 | 0.5 | balance | 15.9 | 240 | 5.7 | 30 | 1080 |
| W90/Cu10 | 10±2.0 | 0.5 | balance | 16.75 | 260 | 6.5 | 27 | 1160 |
Please choose freely from the wide range of already available tungsten copper switch contact or contact us with your specifications.
Zhuzhou Newmetal Materials Co., Ltd. is a refractory metal manufacturer specializing in the raw material and deep-processing product of tungsten, molybdenum, tantalum, niobium, rhenium and tungsten carbide.
• We have conquered the technological difficulties in welding between the tungsten carbide wear-resistant material and stainless steel-based and iron-based. The geometrical tolerance of weldment can be controlled in level A.
• Relying on powder metallurgy institute and engineering materials institute of Central South University, We have established a production-learning-research base to provide powerful technologic support for products R&D. And we have the whole production equipment from mixing to finish machining, including the world’s most advanced cold isostatic pressing machine which can manufacture the widest and longest plate.
•Our 21 technicians, 10 after-sales personnel and 120 manufacturing workers are all heartedly at your service.
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Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.