Tungsten Copper Rod Supplier Mumbai for EDM, Electrical Contacts and Thermal Applications 2
Tungsten copper combines the properties of tungsten and copper, providing useful electrical and thermal conductivity along with wear and arc resistance. For additional technical information, see Tungsten Copper Alloy technical information.
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Table of Contents
- What Is Tungsten Copper Rod?
- Why Tungsten Copper Is Used in Industrial Components
- Tungsten Copper Grades and W/Cu Ratios
- Tungsten Copper Rod Properties
- Tungsten Copper Rod for EDM Electrodes
- Tungsten Copper Rod for Electrical Contacts
- Tungsten Copper Rod for Thermal Management
- Tungsten Copper Rod Sizes and Specifications
- How to Select the Right WCu Grade
- What Affects Tungsten Copper Rod Price?
- Tungsten Copper Rod Supplier in Mumbai
- Frequently Asked Questions
- Request a Quote
What Is Tungsten Copper Rod?
Tungsten Copper Rod is a composite material made by combining tungsten and copper to obtain a useful balance of electrical, thermal and mechanical characteristics.
Instead of behaving like pure copper or pure tungsten, a tungsten-copper composite is designed to use the strengths of both materials. Tungsten contributes high-temperature capability, hardness, wear resistance and low thermal expansion, while copper contributes electrical and thermal conductivity.
Midwest Tungsten describes tungsten-copper as a composite of tungsten suspended in a copper matrix and notes its combination of electrical and thermal conductivity, low thermal expansion and resistance to electrical arcing.
This combination makes Copper Tungsten Rods valuable in applications such as electrical contacts, EDM electrodes, resistance welding electrodes and thermal-management components.
Why Tungsten Copper Is Used in Industrial Components
A conventional material can sometimes provide one desired property but not the complete combination required by the application.
Pure copper, for example, provides excellent electrical and thermal conductivity but is relatively soft. Tungsten has exceptional hardness and high-temperature capability but has much lower electrical and thermal conductivity than copper.
A W-Cu composite provides an engineered balance between these characteristics.
Important performance characteristics include:
- Electrical conductivity
- Thermal conductivity
- Arc resistance
- Wear resistance
- Low thermal expansion
- Dimensional stability
- High-temperature capability
Midwest Tungsten specifically lists electrical contacts, resistance-welding electrodes, EDM electrodes and electronic heat sinks among tungsten-copper applications.
This is why the correct W/Cu composition matters when selecting a rod for an industrial application.
Tungsten Copper Grades and W/Cu Ratios
One of the most important purchasing decisions is the tungsten-to-copper ratio.
Manan Steel & Metals publishes Tungsten Copper Rods in grades ranging from W50/Cu50 through W90/Cu10.
Typical grades include:
| Grade | Tungsten | Copper |
|---|---|---|
| W50/Cu50 | 50% | 50% |
| W55/Cu45 | 55% | 45% |
| W60/Cu40 | 60% | 40% |
| W65/Cu35 | 65% | 35% |
| W70/Cu30 | 70% | 30% |
| W75/Cu25 | 75% | 25% |
| W80/Cu20 | 80% | 20% |
| W85/Cu15 | 85% | 15% |
| W90/Cu10 | 90% | 10% |
As tungsten content increases, density and hardness generally increase, while electrical conductivity tends to decrease.
This gives engineers a practical way to select a composition according to application requirements.
For example, the choice for an EDM electrode may differ from the choice for an electrical contact or thermal-management component.
Tungsten Copper Rod Properties
The properties of a tungsten copper rod depend strongly on composition and manufacturing route.
Manan’s published technical table gives representative values for its range. For example, W50/Cu50 is listed with a density of at least 11.85 g/cm³, hardness of at least 115 HB, electrical resistivity of no more than 3.2 μΩ·cm, and electrical conductivity of at least 54% IACS. W90/Cu10 is listed with a density of at least 16.75 g/cm³, hardness of at least 260 HB, and electrical conductivity of at least 27% IACS.
A useful purchasing view is:
| Grade | Density, approx. min. | Hardness, approx. min. | Conductivity, min. |
|---|---|---|---|
| W50/Cu50 | 11.85 g/cm³ | 115 HB | 54% IACS |
| W60/Cu40 | 12.75 g/cm³ | 140 HB | 47% IACS |
| W70/Cu30 | 13.80 g/cm³ | 175 HB | 42% IACS |
| W75/Cu25 | 14.50 g/cm³ | 195 HB | 38% IACS |
| W80/Cu20 | 15.15 g/cm³ | 220 HB | 34% IACS |
| W90/Cu10 | 16.75 g/cm³ | 260 HB | 27% IACS |
These are product-reference values rather than universal design values. The exact specification, manufacturing process and certification should be checked for the material being purchased.
Tungsten Copper Rod for EDM Electrodes
One of the most commercially important applications for Tungsten Copper Rod is electrical discharge machining.
EDM removes material through controlled electrical discharges between an electrode and conductive workpiece. Electrode wear, dimensional accuracy, thermal behaviour and electrical characteristics can therefore be important when selecting an electrode material.
Tungsten-copper composites are used for EDM and ECM electrodes, particularly in precision applications where wear resistance and electrical/thermal performance are required.
Nippon Tungsten specifically manufactures copper-tungsten EDM electrodes and identifies applications involving die-sinking EDM of hard materials such as tungsten carbide.
For an EDM buyer, the enquiry should therefore mention:
EDM application + required W/Cu grade + electrode diameter + length + required finish.
This is far more useful than simply requesting a “copper tungsten rod.”
Tungsten Copper Rod for Electrical Contacts
Another major application is electrical-contact material.
Medium- and high-voltage switchgear can require contact materials that can handle electrical current while resisting the effects of arcing.
Tungsten-copper composites are used for arc contacts, vacuum contacts and electrical-contact applications because they combine conductivity with arc and erosion resistance.
This makes WCu materials relevant for:
- High-voltage switchgear
- Medium-voltage switchgear
- Vacuum interrupter components
- Circuit-breaker contacts
- Contactors
- Arc contacts
- Current-carrying components
The appropriate grade depends on the electrical system, contact design, operating current, arc conditions and applicable specification.
Tungsten Copper Rod for Thermal Management
The combination of thermal conductivity and comparatively low thermal expansion makes W-Cu composites attractive for selected thermal-management applications.
Tungsten-copper materials can be used for heat sinks, heat spreaders and electronic packaging applications.
This can be important where the component must transfer heat but dimensional changes caused by thermal cycling need to be controlled.
Applications can include:
- Electronic heat sinks
- Heat spreaders
- Thermal-management components
- Electronic packaging
- High-power device components
The required W/Cu ratio should be selected according to thermal conductivity, coefficient of thermal expansion, density and mechanical requirements.
Tungsten Copper Rod Sizes and Specifications
The required dimensions depend heavily on the finished application.
Manan Steel & Metals publishes Tungsten Copper Rods with diameters from approximately 3 mm to 800 mm and lengths from 100 mm to 3000 mm and above, with customized dimensions available according to requirements. Its product information also lists polished finishes and several tolerance options.
A purchase specification should include:
| Requirement | Example |
|---|---|
| Material | Tungsten Copper |
| Grade | W75/Cu25 |
| Diameter | 20 mm |
| Length | 300 mm |
| Surface | Polished |
| Tolerance | As required |
| Quantity | 50 pieces |
| Application | EDM electrode |
| Documentation | Material/test certificate if required |
For precision applications, dimensional tolerance can be just as important as the chemical composition.
How to Select the Right WCu Grade
Do not select a tungsten-copper rod simply because it has the highest tungsten percentage.
Instead, start with the application.
For EDM
Consider electrode wear, conductivity, machining characteristics and required dimensional accuracy.
For Electrical Contacts
Consider arc resistance, electrical conductivity, contact geometry and switching conditions.
For Resistance Welding
Consider current-carrying capability, thermal behaviour, erosion resistance and electrode service life.
For Heat Sinks
Consider thermal conductivity, coefficient of thermal expansion, density and the requirements of the mating material.
For High-Temperature Components
Consider the service temperature, mechanical loading and thermal cycling.
The best grade is therefore the one that meets the complete application requirement—not automatically the grade with the highest tungsten content.
What Affects Tungsten Copper Rod Price?
The Tungsten Copper Rod price depends on several factors.
W/Cu Composition
A W90/Cu10 rod has a very different material composition from W50/Cu50, so the tungsten-to-copper ratio has a direct impact on material cost.
Diameter
Large-diameter rods require more material and may involve different processing requirements.
Length
Cut length and material utilization can affect the commercial quotation.
Surface Finish
Polished, centreless-ground or precision-finished rods may cost more than standard material.
Tolerance
Tighter dimensional tolerances generally require additional processing and inspection.
Quantity
Production quantities can have different commercial pricing from small prototype requirements.
Custom Grade
Special W/Cu compositions or non-standard dimensions may require customized production.
For an accurate tungsten copper rod price in Mumbai, provide the grade, dimensions, quantity and application rather than asking for a generic per-kg price.
Tungsten Copper Rod Supplier in Mumbai
For industrial buyers searching for a Tungsten Copper Rod Supplier Mumbai, Manan Steel & Metals lists Tungsten Copper Rods as part of its specialty material range.
The company’s published range includes W50/Cu50, W55/Cu45, W60/Cu40, W65/Cu35, W70/Cu30, W75/Cu25, W80/Cu20, W85/Cu15 and W90/Cu10 grades, with customized requirements also listed.
You can visit the Tungsten Copper Rod product page and send the exact grade and dimensions required.
For an enquiry, provide:
Grade: W50/Cu50 to W90/Cu10
Diameter: ___ mm
Length: ___ mm
Finish: ___
Tolerance: ___
Quantity: ___
Application: EDM / electrical contact / welding / thermal management
Documentation: ___
Providing the application helps avoid supplying a composition that does not match the intended service.
Frequently Asked Questions
What is Tungsten Copper Rod?
Tungsten Copper Rod is a W-Cu composite material combining tungsten and copper to obtain a balance of electrical conductivity, thermal performance, wear resistance, arc resistance and dimensional stability.
What grades of Tungsten Copper Rod are available?
Manan Steel & Metals lists grades from W50/Cu50 through W90/Cu10, including W70/Cu30, W75/Cu25 and W80/Cu20.
Which Tungsten Copper grade is used for EDM?
Several W-Cu grades can be used for EDM depending on the electrode design and machining requirement. The correct grade should be selected based on electrical, thermal, wear and dimensional requirements rather than composition alone. Copper-tungsten EDM electrodes are used in precision electrical-discharge machining applications.
What is WCu or CuW?
WCu and CuW are commonly used designations for tungsten-copper composite materials. The notation refers to the tungsten and copper components and is often accompanied by the percentage ratio, such as W75/Cu25.
Is Tungsten Copper used in electrical contacts?
Yes. Tungsten-copper composites are used in electrical-contact and arc-contact applications, including high-voltage equipment, because they combine electrical conductivity with arc and erosion resistance.
Is Tungsten Copper used for heat sinks?
Yes. W-Cu composites are used for selected heat-sink, heat-spreader and electronic-packaging applications where thermal conductivity and controlled thermal expansion are important.
What information is required to order Tungsten Copper Rod?
Specify the W/Cu grade, diameter, length, finish, tolerance, quantity, application and documentation requirements.
Request a Quote for Tungsten Copper Rod
Manan Steel & Metals
Shop No. 2, Hira Building, 97 Khetwadi Main Road (Nanubhai Desai Road), Girgaon, Mumbai – 400004, Maharashtra, India
Phone: 7977369869
Email: manansteel@gmail.com
Website: www.manansteel.com
Send your requirement in this format:
Material: Tungsten Copper Rod
Grade: W75/Cu25
Diameter: ___ mm
Length: ___ mm
Finish: ___
Tolerance: ___
Quantity: ___ kg / pieces
Application: ___
Testing/Documentation: ___
For EDM, switchgear, electrical-contact, welding or thermal-management requirements, include the actual application so the enquiry can be matched to the appropriate W-Cu specification.