High Performance Welding Electrode Electrical Contact Wear Applications Copper Tungsten Rwma Class

• Type: Cu (Copper/Copper-Alloy Welding Electrode)
• Material: Copper Tungsten A10W, A30W
• Diameter: Customized or by Drawing
• Length: Customized or by Drawing
• Welding Core Type: Alloy Structual Tungsten
• Electrode Coating Type: Tungsten Alloy
• Model NO.: TE003
• Function: Surfacing Electrode
• Welding Power: AC
• Composition: Copper Tungsten Alloy
• Standard: Rwma Class
• Shapes: Wire, Rod, Bar, Strip, Foil, Block, Plate, Ring,
• Content: 65%W35%Cu, 70%W30%Cu, 75%W25%Cu , 80%W20%Cu Copper
• Rwma Class: 10, 11 and 12
• Density G/Cc: 14.18, 14.80 and 15.60
• Elect. Cond. %Iacs: 47-52, 42-50, 41-49
• Transport Package: Export Wooden Cases and Foam Inside
• Specification: Standard sizes or customized
• Trademark: Kefeng
• Origin: China
• HS Code: 81019990
• Production Capacity: 3000kgs Per Month

Product Description

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.

 

1. Low thermal expansion
2. High wear resistance
3. Low consumption
4. High arc resistance
5. 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:
 

1. Resistance welding electrodes
2. Circuit breakers (air or oil immersed)
3. Arcing tips
4. Heavy-duty contactors
5. EDM electrodes
6. Make-and-break contacts
7. 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.