Product Description
Copper Tungsten
Refractory bi-metal composite produced by a tightly controlled process of pressing and sintering tungsten powder and then infiltrating the sintered material with copper.
| Description |
% |
RWMA Class |
Density g/cm3 |
Elect. Cond. %IACS |
Tungsten
Copper |
70
30 |
10 |
14.18 |
47-52 |
Tungsten
Copper |
75
25 |
11 |
14.80 |
42-50 |
Tungsten
Copper |
80
20 |
12 |
15.60 |
41-49 |
Tungsten Copper
Heat treatable copper alloy |
75
25 |
|
14.80 |
25-30 |
- Tungsten Copper Tungsten Alloys Resistance Welding Electrodes, Heavy Duty Contacts, Relays, Switches, RWMA quality standard
- Material: 65%W35%Cu, 70%W30%Cu, 75%W25%Cu , 80%W20%Cu copper tungsten
- Specification: standard or custom sizes according to customer's drawing
- Kefeng copper-tungsten alloys are of the highest quality avaiable and the physical properties of our alloys are considerably
specified under RWMA stand
RESISTANCE WELDING
A group of welding processes where joining of metal is accomplished by the heated produced from the resistance of the article to flow of electrical current in a circuit of which the article is a part. This occurs when pressure is directed at the electrodes where the electrical ciucuit is initiated and concluded.
Copper tungsten is processed for specific use as electrode materials for resistance welding and other similar related electrical contact wear applications.
Refractroy alloys are manufactured by the powder metallurgy techniques of pressing, sintering and infiltrating of tungsten iwth copper. Those alloys are produced under rigid manufacturing fixed processes resulting in a high degree of metallurgical uniformity held in the fine-grained micro-structure of the finished materials. We, Kefeng Powder Metallurgy Co., manufactures and supplies DRC Conflict Free material only.
Our Advantages
Characteristics and features
The Copper tungsten material products are highly resistant to heat, electric arc, wear and deformation at high temperature welding, flash butt and spot welding. They also have excellent electrical and thermal conductivity. These metal composite materials produce dense hard metals with low thermal expansion, good thermal and electrical conductivity, excellent arc resistance, superior wear resistance and strength at elevated temperatures, which is a high performance welding electrode that will perform well under most severe applications.
- Low thermal expansion
- High wear resistance
- Low consumption
- High arc resistance
- High thermal and electrical conductivity
Application
For Copper Tungsten Alloy of composition of 75%W25%Cu that can be applied in projection welding electrodes, flash and butt welding electrodes, light upsetting and seam welding bushings. It is harder than Class 10 and used where moderate pressure is required. This material can also be used for spot welding low conductivity steels, such as stainless, and the availability are Rod, Bar and Inserts.
For Copper Tungsten Alloy of composition of 80%W20%Cu, they can be used in Heavy duty projection welding electrodes, electro-forming and electroforging electrode facings for upsetting of studs and rivets, cross wire welding of large diameter wire and rod. Kefeng's Copper Tungsten alloys are used as electrode materials for resistance welding and similar related applications and the heavy duty contact, relays, switches, which the materials will withstand the effects of the arcing to the interruption of large currents.
The typical applications include:
- Resistance welding electrodes
- Circuit breakers (air or oil immersed)
- Arcing tips
- Heavy-duty contactors
- EDM electrodes
- Make-and-break contacts
- Relays/switches
Technical parameters
| Materials |
Wt% Tungsten Content |
Wt%
Copper Content |
Grade |
RWMA Class |
Density (g/cc) |
Electrical Conductivity (%IACS) |
Hardness (HRB) |
| W70Cu30 |
70 |
Balance |
A5WC |
10 |
14.18 |
47-52 |
88-95 |
| W75Cu25 |
75 |
Balance |
A10WC |
11 |
14.80 |
42-50 |
96-99 |
| W80Cu20 |
80 |
Balance |
A30WC |
12 |
15.60 |
41-49 |
99-104 |
Note: The values are typical and not to be used for specifications.
For three decades Kefeng Powder Metallurgy has pioneered and produced the best tungsten alloy metal solutions for the world's products, applications and industries.
-Our products are subjected to rigorous physical testing, including density, tensile, yield strength,conductivity, elongation and hardness.
-Our products are identified at all stages of the production process and are thoroughly analized and checked before delivery.
-Our products can be supplied with full verification in accordance with specifications,whatever
Chemically, mechanically or physically.
At Kefeng Metallurgy,our expert and equipment are committed to providing the best tungsten alloy
Refractory metal solution that performs our customer's requirements and improving overall quality.
){kind=link}