Highly stressed turbine blades and turbine discs , screws, shafts, bolts, pins and rings.
Creep resisting, corrosion resistance hardened and tempered steel, with good toughness and good creep rupture strength. Usual upper temperature limit for continuous operating 560°C.
| C | Si | Mn | Cr | Mo | Ni | V | N | |
|---|---|---|---|---|---|---|---|---|
| 0.12 | 0.20 | 0.80 | 11.70 | 1.70 | 2.70 | 0.30 | 0.04 |
