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SEW 555 30CrMoNiV5‑11 Steel – High‑Strength Quenched & Tempered for Turbine Shafts & Discs

The high temperature alloy steel 30CrMoNiV5-11 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 GPa

300.0 °C

192 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

0.3 [-]

Typical for Steel

Reduction of area, transverse

20.0 °C

40 %

Tensile strength, transverse

20.0 °C

700 - 850 MPa

Yield strength Rp0.2

100.0 °C

525 MPa

200.0 °C

500 MPa

250.0 °C

480 MPa

300.0 °C

465 MPa

350.0 °C

445 MPa

400.0 °C

425 MPa

450.0 °C

400 MPa

500.0 °C

365 MPa

Yield strength Rp0.2, transverse

20.0 °C

550 MPa

Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.21E-5 1/K

200.0 °C

1.27E-5 1/K

300.0 °C

1.32E-5 1/K

400.0 °C

1.36E-5 1/K

500.0 °C

1.4E-5 1/K

600.0 °C

1.44E-5 1/K

Max service temperature, long

0 - 550 °C

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

47.1 W/(m·K)

200.0 °C

45.9 W/(m·K)

300.0 °C

43.8 W/(m·K)

400.0 °C

41.3 W/(m·K)

500.0 °C

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

Aluminium

0.01 %

Carbon

0.28 - 0.34 %

Chromium

1.1 - 1.4 %

Manganese

0.3 - 0.8 %

Molybdenum

1 - 1.2 %

Nickel

0.5 - 0.75 %

Phosphorus

0.01 - 0.02 %

Silicon

0.15 - 0.3 %

Sulfur

0.007 - 0.018 %

Vanadium

0.25 - 0.35 %


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