Tungsten Copper Bars for Industrial Electrical and Thermal Applications
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Tungsten copper bars are high-performance conductive components for industrial applications.
They combine tungsten’s high melting point with copper’s electrical conductivity.
Manufactured via infiltration and powder metallurgy processes, ensuring density stability.
These bars are widely used in electrical contacts, switchgear and thermal systems.
They provide excellent arc resistance and long service life.
Suitable for demanding industrial environments.
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Description
Common Grades
| Grade | Application |
| W70/Cu30 | Electrical systems |
| W80/Cu20 | High temperature parts |
Product Forms
| Form | Size |
| Bar | 5–100 mm |
Common Grades & Specifications
Buyers choose the grade based on conductivity vs heat resistance requirements.
| Grade | Copper % | Tungsten % | ASTM B702 | RWMA Class | Application |
| W50/Cu50 | 48–52% | Balance | Class A | — | Light-duty electrical contacts |
| W60/Cu40 | 38–42% | Balance | Class B | — | General EDM electrodes |
| W70/Cu30 | 28–32% | Balance | Class C | Class 10 | High-voltage switchgear |
| W75/Cu25 | 23–27% | Balance | Class D | Class 11 | Heavy-duty EDM & welding |
| W80/Cu20 | 18–22% | Balance | Class E | Class 12 | Heat sinks & aerospace nozzles |
| W90/Cu10 | 8–12% | Balance | — | — | Specialized thermal mounting |
Available Product Forms & Dimensions
Tungsten copper is not cast. It is produced in semi-finished forms for precision machining.
| Product Form | Diameter / Thickness | Length / Size | Finish |
| Round Rod | 1–100 mm | 100–1000 mm | Ground / Polished |
| Square / Hex Bar | 5–80 mm | 200–500 mm | Machined |
| Plate / Sheet | 1–50 mm | 100×200 to 300×300 mm | Rolled / Ground |
| Foil / Strip | 0.05–0.5 mm | Custom | Bright / Matte |
| Finished Parts | Per drawing | Per drawing | CNC / EDM |
Physical Properties
| Grade | Density (g/cm³) | Hardness (HB) | Conductivity (% IACS) |
| W60/Cu40 | ~12.75 | 140 | 47% |
| W70/Cu30 | ~14.18 | 175 | 42% |
| W75/Cu25 | ~14.50 | 195 | 38% |
| W80/Cu20 | ~15.15 | 220 | 34% |
| W90/Cu10 | ~16.75 | 260 | 27% |
FAQs
1. Why use tungsten copper bars?
Because they balance conductivity and heat resistance.
2. Are they machinable?
Yes, CNC and EDM machining are supported.
Literature
Reliable Tungsten Copper Bars for Industrial Electrical and Thermal Applications Manufacturer & Supplier in China
Robust provides high-quality Tungsten Copper Bars for Industrial Electrical and Thermal Applications solutions for industrial, high-temperature, and precision engineering applications worldwide.
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