home Manufacturing Technology Manufacturing Equipment
Industrial manufacturing
Industrial Internet of Things | Industrial materials | Equipment Maintenance and Repair | Industrial programming |
home  MfgRobots >> Industrial manufacturing >  >> Industrial materials >> Metal

SEW 555: 23CrNiMo7-4-7 Quenched & Tempered Alloy Steel for High-Performance Turbine Shafts and Discs

The high temperature alloy steel 23CrNiMo7-4-7 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

PropertyTemperatureValue

Density

20.0 °C

7.85 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 GPa

200.0 °C

199 - 200 GPa

300.0 °C

192 - 193 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation, transverse

20.0 °C

12 %

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Nickel Chromium Molybdenum Steel

Reduction of area, transverse

20.0 °C

40 %

Tensile strength, transverse

20.0 °C

750 - 900 MPa

Yield strength Rp0.2

100.0 °C

565 MPa

200.0 °C

535 MPa

250.0 °C

515 MPa

300.0 °C

490 MPa

350.0 °C

435 MPa

400.0 °C

405 MPa

450.0 °C

375 MPa

Yield strength Rp0.2, transverse

20.0 °C

600 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.11E-5 - 1.21E-5 1/K

200.0 °C

1.21E-5 - 1.27E-5 1/K

300.0 °C

1.29E-5 - 1.32E-5 1/K

400.0 °C

1.35E-5 - 1.36E-5 1/K

500.0 °C

1.39E-5 - 1.4E-5 1/K

600.0 °C

1.41E-5 - 1.44E-5 1/K

Max service temperature, long

370 - 480 °C

Melting point

1382 - 1529 °C

Typical for Nickel Chromium Molybdenum Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

499 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

536 J/(kg·K)

500.0 °C

558 J/(kg·K)

600.0 °C

587 J/(kg·K)

Thermal conductivity

20.0 °C

47.1 W/(m·K)

100.0 °C

43 - 47.1 W/(m·K)

200.0 °C

42 - 45.9 W/(m·K)

300.0 °C

40 - 43.8 W/(m·K)

400.0 °C

37 - 41.3 W/(m·K)

500.0 °C

34 - 38.7 W/(m·K)

600.0 °C

36 W/(m·K)

Thermal diffusivity

20.0 °C

13 mm²/s

100.0 °C

12.1 mm²/s

200.0 °C

11.1 mm²/s

300.0 °C

9.9 mm²/s

400.0 °C

8.7 mm²/s

500.0 °C

7.4 mm²/s

600.0 °C

6 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.21E-7 Ω·m

100.0 °C

2.72E-7 Ω·m

200.0 °C

3.44E-7 Ω·m

300.0 °C

4.28E-7 Ω·m

400.0 °C

5.26E-7 Ω·m

500.0 °C

6.39E-7 Ω·m

600.0 °C

7.7E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.2 - 0.26 %

Chromium

1.7 - 2 %

Manganese

0.5 - 0.8 %

Molybdenum

0.6 - 0.8 %

Nickel

0.9 - 1.2 %

Phosphorus

0.01 - 0.02 %

Silicon

0.3 %

Sulfur

0.007 - 0.018 %


Metal

  • Metal
  • Resin
  • fiber
  • Composite material
  • Nanomaterials
  • Polymer Materials
  • Biologics
  • Dye
  • Spices
    1. SEW 410 Grade G-X5CrNiMo16-5: Quenched & Tempered Martensitic Stainless Steel for High-Performance Applications
    2. SEW 555 27NiCrMoV11-6 Quenched & Tempered Steel – High-Performance Turbine & Generator Shafts
    3. SEW 835 GS-Ck45 Quenched & Tempered Steel for High-Performance Mechanical Components
    4. SEW 835 Grade GS-C45 Quenched & Tempered Steel for Mechanical Engineering Applications
    5. SEW 555 30CrMoNiV5‑11 Steel – High‑Strength Quenched & Tempered for Turbine Shafts & Discs
    6. SEW 555 28CrMoNiV4-9: Quenched & Tempered Alloy Steel for Turbine Shafts & Discs
    7. SEW 555 X14CrMoVNbN10-1 Quenched & Tempered Steel – High‑Performance Turbine & Generator Components
    8. SEW 555 X12CrMoWVNbN10-1-1 Quenched & Tempered Steel – High-Performance Turbine Shafts
    9. SEW 555 Grade X21CrMoV12-1 – High-Performance Quenched & Tempered Alloy Steel
    10. SEW 555 23CrMo5 Steel – Quenched & Tempered (QT) for High‑Temperature Turbine Applications