SEW 555 X12CrMoWVNbN10-1-1 Quenched & Tempered Steel – High-Performance Turbine Shafts
The high temperature alloy steel X12CrMoWVNbN10-1-1 is used for larger preshaped components in the quenched and tempered condition in turbine and generator installations, in particular as shafts and discs. The steel is weldable if the relevant measures required are observed.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 220 GPa | Typical for Martensitic Stainless Steel |
Elongation, transverse | 20.0 °C | 12 - 15 % | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Martensitic Stainless Steel |
Reduction of area, transverse | 20.0 °C | 35 - 40 % | |
Shear modulus | 23.0 °C | 77 GPa | Typical for Martensitic Stainless Steel |
Tensile strength, transverse | 20.0 °C | 700 - 1000 MPa | |
Yield strength Rp0.2 | 100.0 °C | 555 - 755 MPa | |
200.0 °C | 525 - 725 MPa | ||
250.0 °C | 515 - 710 MPa | ||
300.0 °C | 505 - 695 MPa | ||
350.0 °C | 495 - 675 MPa | ||
400.0 °C | 475 - 650 MPa | ||
450.0 °C | 445 - 615 MPa | ||
500.0 °C | 405 - 565 MPa | ||
550.0 °C | 345 - 505 MPa | ||
600.0 °C | 270 - 425 MPa | ||
Yield strength Rp0.2, transverse | 20.0 °C | 600 - 830 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1E-5 - 1.5E-5 1/K | Typical for Martensitic Stainless Steel |
Max service temperature, long | 0 - 600 °C | ||
Melting point | 1370 - 1530 °C | Typical for Martensitic Stainless Steel | |
Specific heat capacity | 23.0 °C | 460 J/(kg·K) | Typical for Martensitic Stainless Steel |
Thermal conductivity | 23.0 °C | 14 - 31 W/(m·K) | Typical for Martensitic Stainless Steel |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 6E-7 Ω·m | Typical for Martensitic Stainless Steel |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.012 % |
Carbon | 0.1 - 0.14 % |
Chromium | 10 - 11 % |
Manganese | 0.4 - 0.6 % |
Molybdenum | 1 - 1.2 % |
Nickel | 0.6 - 0.8 % |
Niobium | 0.04 - 0.06 % |
Nitrogen | 0.04 - 0.06 % |
Phosphorus | 0.02 % |
Silicon | 0.1 % |
Sulfur | 7E-3 % |
Tungsten | 0.95 - 1.1 % |
Vanadium | 0.15 - 0.25 % |
Metal
- SEW 410 Grade G-X5CrNiMo16-5: Quenched & Tempered Martensitic Stainless Steel for High-Performance Applications
- SEW 555 27NiCrMoV11-6 Quenched & Tempered Steel – High-Performance Turbine & Generator Shafts
- SEW 835 GS-Ck45 Quenched & Tempered Steel for High-Performance Mechanical Components
- SEW 835 Grade GS-C45 Quenched & Tempered Steel for Mechanical Engineering Applications
- SEW 555 30CrMoNiV5‑11 Steel – High‑Strength Quenched & Tempered for Turbine Shafts & Discs
- SEW 555 28CrMoNiV4-9: Quenched & Tempered Alloy Steel for Turbine Shafts & Discs
- SEW 555 X14CrMoVNbN10-1 Quenched & Tempered Steel – High‑Performance Turbine & Generator Components
- SEW 555: 23CrNiMo7-4-7 Quenched & Tempered Alloy Steel for High-Performance Turbine Shafts and Discs
- SEW 555 Grade X21CrMoV12-1 – High-Performance Quenched & Tempered Alloy Steel
- SEW 555 23CrMo5 Steel – Quenched & Tempered (QT) for High‑Temperature Turbine Applications