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Product Description
Technical details, material information and manufacturing notes for this product.
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% |
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Related Technical Resources
Material guides, application notes and manufacturing knowledge from ROBUST.
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