Products Description

The tungsten copper elknoite 10W3 round bar is a high-performance tungsten-copper alloy round bar, classified under RWMA Class 11 material. It consists of 75% tungsten and 25% copper, a unique alloy composition that combines tungsten's high strength and wear resistance with copper's excellent electrical and thermal conductivity. This material is typically supplied in round bar form for ease of machining and application.

Specification

Surface: Ground, polished
Dia: 2-100mm.
Length: 10-500mm
W/Cu: W(50-90%)/Cu(10-50%)

Character

Wear Resistance: As its high tungsten content, tungsten copper alloy has excellent wear resistance. This property makes it highly effective in high-pressure and high-friction applications, significantly reducing wear and extending component service life.

Arc Erosion Resistance: Under arcing conditions, tungsten copper alloy can withstand high-energy arc impacts without significant damage. This characteristic makes it an essential material for welding and electrical discharge machining (EDM).

Electrical Conductivity: Despite its high tungsten content, the 25% copper composition ensures good electrical conductivity, making it suitable for applications requiring moderate electrical conduction, such as electrode materials.

Thermal Conductivity: The high thermal conductivity of copper enhances the alloy's heat dissipation capability. In high-temperature environments, this property allows rapid heat transfer, preventing overheating and improving equipment stability and reliability.

Hardness: Elkonite 10W3 has a hardness of 92 HRB, providing a balance of toughness and resistance to high pressure and impact forces.

Strength: The alloy offers high mechanical strength, meeting the demands of rigorous applications such as welding and forging dies.

Machining Performance: Although tungsten copper alloy is relatively hard, it remains machinable using conventional methods such as turning, milling, and drilling. However, proper tool selection and optimized cutting parameters are necessary to minimize tool wear.

Surface Treatment: The material can undergo surface treatments such as plating or coating to further enhance its wear and corrosion resistance.

Application

Electrode Inserts: Elkonite 10W3 round bars are primarily used as electrode inserts for flash welding and upset welding. Their high wear resistance and arc erosion resistance ensure stable performance under high-current and high-temperature welding conditions, significantly extending electrode lifespan.

Projection Welding Electrodes: Suitable for medium-force projection welding electrodes, improving both welding quality and efficiency.

Electric Upsetting & Forging Dies: In light-duty electric upsetting and forging processes, this alloy withstands high pressure and temperature, ensuring die stability and durability.

Electrical Discharge Machining (EDM)

Electrode Material: Elkonite 10W3 is an ideal material for EDM electrodes. Its high hardness and wear resistance enhance machining efficiency while prolonging electrode life, reducing replacement frequency.

Heat Dissipation Components: Used in heat sinks and other thermal management components for electronic devices. Its excellent thermal conductivity ensures efficient heat dissipation, maintaining stable operation in high-temperature environments.

Connectors: Suitable for high-conductivity, high-wear-resistant connectors, providing reliable performance in demanding applications.

Bearing Inserts: The alloy can serve as bearing inserts, where its high hardness and wear resistance minimize friction and extend bearing service life.

Mold Surface Material: In specialized applications such as electric upsetting and forging dies, Elkonite 10W3 provides superior wear resistance and impact resistance, ensuring long-term mold stability and durability.

Brand and NO.	Chemical components%			Physical properties
Brand and NO.	Cu	Total impurities ≤	W	Density (g/cm³) ≥	Hardness HB ≥	Resistivity (µΩ·cm) ≤	Conductivity IACS%≥	Bending strength Mpa≥
CuW(50)	50±2.0	0.5	Bal.	11.85	115	3.2	54
CuW(55)	45±2.0	0.5	Bal.	12.30	125	3.5	49
CuW(60)	40±2.0	0.5	Bal.	12.75	140	3.7	47
CuW(65)	35±2.0	0.5	Bal.	13.30	155	3.9	44
CuW(70)	30±2.0	0.5	Bal.	13.80	175	4.1	42	790
CuW(75)	25±2.0	0.5	Bal.	14.50	195	4.5	38	885
CuW(80)	20±2.0	0.5	Bal.	15.15	220	5.0	34	980
CuW(85)	15±2.0	0.5	Bal.	15.90	240	5.7	30	1080
CuW(90)	10±2.0	0.5	Bal.	16.75	260	6.5	27	1160

FAQ

Are you a factory ?

Yes, we are factory but generally we use our trading company to handle the business abroad. It will be convenient to receive the remittance and arrange the shipment.

What is the MOQ of Tungsten Copper Elknoite 10w3 Round Bar?

A: Depends on quantity, generally, no MOQ limit.

How to pay for it?

A: A bank transfer (T/T) will be acceptable.

What is the delivery time?

A: around 7-20 days which depends on the quantity and production.

What is kind of the package?

A: generally, we use carton case or plywood case and with protective material inside to ensure the save of cargo

What is the lead time?

A: from order placed to cargo receiving will take around 10-25 days.

What is the delivery method?

A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.

Why choose tungsten-copper alloy over pure copper or tungsten?

Better wear resistance than pure copper

Higher conductivity than pure tungsten

Balanced thermal & electrical performance for extreme conditions

Can Elkonite 10W3 be machined easily?

Yes, it can be machined using standard methods (turning, milling, drilling), but carbide tools are recommended due to its hardness. Optimal cutting speeds and coolant use help extend tool life.

Does Elkonite 10W3 require any special surface treatments?

While it performs well in its standard form, coatings (e.g., nickel plating) or polishing can further enhance corrosion resistance and surface finish for specific applications.

Is Elkonite 10W3 suitable for high-temperature environments?

Yes, its high melting point (from tungsten) and thermal conductivity (from copper) make it stable under high heat, ideal for welding and EDM applications.