Tungsten Copper Rings for Electrical Contact and Vacuum Systems
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Tungsten copper rings are high-performance circular components designed for electrical switching systems.
They combine tungsten’s thermal resistance with copper’s conductivity.
Manufactured via powder metallurgy and CNC machining, they ensure precise dimensions and stability.
These rings are widely used in vacuum interrupters and high-voltage electrical systems.
They resist arc erosion and maintain performance under heavy load cycles.
Ideal for advanced industrial electrical applications.
Description
Common Grades
| Grade | Application |
| W70/Cu30 | Switchgear |
| W80/Cu20 | Vacuum systems |
Product Forms
| Form | Type |
| Ring | Machined / EDM |
Physical Properties
| Density | 12–17 g/cm³ |
| Hardness | 150–240 HB |
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% |
Video
Literature
Reliable Tungsten Copper Rings for Electrical Contact and Vacuum Systems Manufacturer & Supplier in China
Robust provides high-quality Tungsten Copper Rings for Electrical Contact and Vacuum Systems solutions for industrial, high-temperature, and precision engineering applications worldwide.
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