Highly stressed components for the aircraft and rocket industries. Constructional and tool steel for hot and cold working tools used for long-time service at temperatures up to approx. 450°C (840°F). Machine tools, pressure vessels, gearwheels (nitrided), screws, precision parts, tools for hydrostatic presses, cold extrusion tools, cold heading and embossing tools, plastic moulds, die casting tools for aluminium and zinc alloys, hot pressing tools.
| SEL | UNS | EN | Market grade |
|---|---|---|---|
| 1.6359 | K92890 | X2NiCoMo18-8-5 | Maraging 250 |
| ASTM | AMS | BS |
|---|---|---|
| Marage 250 | 6512 | BS S162 |
| C | Si | Mn | Mo | Ni | Co | Ti | Al | |
|---|---|---|---|---|---|---|---|---|
| ≤ 0.005 | ≤ 0.05 | ≤ 0.05 | 4.90 | 18.00 | 7.80 | 0.55 | 0.13 |
