Low Expansion High Specific Gravity Customizable Hard Tungsten Copper Alloy

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: ASTM
• Model NO.: Tungsten Copper Alloy
• Purity: 90%-97%
• Alloy: Alloy
• Shape: Cusotmized
• Type: Customized
• Product Name: Customized Tungsten Copper Alloy
• Keywords: Tungsten Copper Alloy
• Available Grades: W65cu35, W70cu30, W75cu25, W80cu20
• Composition Range: 65-80% Tungsten, 20-35% Copper
• ASTM Standard: B702 (Class a Through Class D)
• Density: 11.7 - 14.3 G/Cm³
• Theoretical Density: ≥96%
• Electrical Conductivity: 41-64% Iacs
• Hardness: 69-102 Hrb
• Tensile Strength: 344-654 MPa
• Thermal Expansion Coefficient: (9.5-13.0) × 0.0000001 /K
• Compliance: ASTM B702, Rwma Certified
• Primary Applications: Resistance Welding Electrodes, EDM Electrodes, and
• Transport Package: Export Wooden Cases
• Specification: Standard Sizes or customized
• Trademark: KEFENG
• Origin: Shanxi, China
• HS Code: 81019990
• Production Capacity: 3000kgs Per Month

Product Description

Product Description

TUNGSTEN COPPER ALLOY
 
Premium tungsten copper alloy combining exceptional electrical conductivity with superior heat resistance, ideal for resistance welding electrodes, EDM applications, and high-performance electrical contacts.
 
Available in multiple compositions (W65Cu35 to W80Cu20), fully compliant with ASTM B702 and RWMA standards, ensuring reliable performance in demanding industrial environments.

KEY FEATURE
 
* High electrical conductivity ranging from 38-64% IACS ensures optimal current transfer and energy efficiency in welding and electrical applications.
 
*  Exceptional hardness (69-106 Rockwell B) and tensile strength up to 689 MPa provide extended electrode service life and reduced replacement costs.
 
* Superior thermal properties with a low thermal expansion coefficient (4.9-7.2 x 0.000001) minimize deformation under extreme temperature conditions and prolonged use.
 
* Multiple grade options (W65Cu35, W70Cu30, W75Cu25, W80Cu20) available in standard and custom sizes to meet specific application requirements.

Specification

TECHNICAL PARAMETERS
Product Name	Customized Tungsten Copper Alloy
Keywords	Tungsten Copper Alloy
Available Grades	W65Cu35, W70Cu30, W75Cu25, W80Cu20
Composition Range	65-80% Tungsten, 20-35% Copper
ASTM Standard	B702 (Class A through Class D)
Density	11.7 - 14.3 g/cm³
Theoretical Density	≥96%
Electrical Conductivity	41-64% IACS
Hardness	69-102 HRB
Tensile Strength	344-654 MPa
Thermal Expansion Coefficient	(9.5-13.0) × 0.000001 /K
Compliance	ASTM B702, RWMA Certified
Primary Applications	Resistance Welding Electrodes, EDM Electrodes, And Electrical Contacts

TAB;E X1.1 Chemical Requirements
Class A Class B Class C Class D Class E
Copper %	48-52	38-42	28-32	23-27	18-22
Tungsten %	Balance	Balance	Balance	Balance	Balance
Additives(Individual or total),Max %	1.00	1.00	1.00	1.00	1.00
Class A Class B Class C Class D Class E
Hardness, Rockwell B, Density, Mg/m3 at 96% theoretical Electrical conductivity c% IACS Electrical conductivity D% IACS Note-Hardness and density values cover both types.	69-83 11.7 56-64 38-56	77-90 12.7 49-57 34-49	85-98 13.7 44-52 29-43	89-102 14.3 41-48 27-41	96-106 15.0 38-45 25-37
Class A Class B Class C Class D Class E
Tensile Strength, ksi MPa	50-60 344-413	55-65 379-448	75-85 516-585	85-95 585-654	90-100 620-689
Modulus of rupture, ksi MPa	75-85 517-586	110-120 758-827	130-140 896-965	140-150 965-1034	150-160 1034-1103
Coefficient of Expansion, in./in OF m/m.k	7.2x10-6 13x10-6	6.6x10-6 11.9x10-6	5.7x10-6 10.3x10-6	5.3x10-6 9.5x10-6	4.9x10-6 8.8x10-6

Detailed Photos

CONSISTENT WELD QUALITY WITHOUT CONTAMINATION
 
Our high-purity tungsten copper electrodes deliver superior arc stability and minimal electrode wear, effectively eliminating material transfer and surface contamination during resistance welding operations. This metallurgical precision ensures repeatable weld integrity, reduces defect rates by up to 40%, and significantly lowers scrap costs in high-volume production environments.

DUAL-METAL SYNERGY FOR EXTREME CONDITIONS
 
Engineered through advanced powder metallurgy techniques, our tungsten-copper composite matrix maintains optimal electrical conductivity while withstanding thermal loads exceeding 500°C. This unique microstructure prevents thermal degradation and structural failure under sustained high-current density applications, outperforming conventional single-metal electrode materials in demanding industrial welding processes.

VERSATILE PRECISION ENGINEERING
 
Manufactured to strict ASTM B702 and RWMA specifications, our tungsten copper alloys provide consistent mechanical properties and dimensional tolerances across grades W65Cu35 through W80Cu20. This comprehensive range enables seamless integration into diverse applications—from micro-EDM machining to heavy-duty spot welding—streamlining your supply chain with a single, certified material source.

FAQ

Q1: What are your main products?
A: Tungsten alloy rods, blocks, rings, sheets, and processed parts.

Q2: Why should I choose your company as a partner?
A: As you know, low-cost raw materials make your products more competitive in the market. It means it will make your sales easier.

Q3: Can the delivery time of tungsten alloy products be shorter?
A: Usually, we ensure that all orders are delivered within 30 days. Tungsten copper 15 days.

Q4: Can the price be lower?
A: We use first-class tungsten powder with high cost.

Q5: What is the MOQ of your products?
A: Please send an email to inquire about different products.