Carbide Cold Heading Dies
11 grades engineered for the fastener industry — longer die life, stable dimensions
Tungsten carbide cold heading (冷镦) dies, punches and inserts for bolt, nut, screw and rivet production. 11 grades covering the hardness–toughness envelope from finishing inserts to high-impact heading stations, with shrink-fit carbide nibs and full die sets available.
OEM per drawingFastener industry standards (DIN / ANSI compatible)
Key features
- 11 grades from HRA 92.7 finishing grades to 23% Co high-toughness impact grades
- Uniform, vacuum-tight microstructure for predictable die life
- Ground and polished working surfaces reduce galling and pickup
- Carbide nibs with steel cases, or full carbide dies, per customer press setup
- Re-grind and refurbishment programs lower total cost per 10,000 fasteners
Representative grades
| Grade | WC | Binder | Hardness | TRS (N/mm²) | Density (g/cm³) | Typical application |
|---|---|---|---|---|---|---|
| YG15 | 85% | Co 15% | HRA 86.5 | ≥ 2800 | 13.95 | Nut forming dies, medium impact |
| YG20 | 80% | Co 20% | HRA 84.5 | ≥ 3000 | 13.40 | Bolt heading dies, high impact |
| YG25 | 77% | Co 23% | HRA 82.0 | ≥ 3500 | 12.90 | Severe-impact punches |
| GT35-type | 85%+ | Co/Ni mixed | HRA 86.0 | ≥ 2900 | 13.20 | Trim dies, finishing inserts |
Representative grades shown. Full grade portfolio and custom formulations available on request.
Typical applications
Bolt & screw heading stationsNut formersRivet and pin toolingTrim and pointing dies