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DIN 17240 X22CrMoV12-1 Steel: Quenched & Tempered (QT800) – High‑Strength, High‑Temperature Performance

Temperable high strength steel with good high temperature strength up to 580 °C and resistance to scaling up to 600 °C. Application: pressure vessel and pipeline construction, turbine construction, chemicals industry, reactor engineering, screws, nuts

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 - 7.76 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

216 - 218 GPa

100.0 °C

209 - 213 GPa

200.0 °C

200 - 206 GPa

300.0 °C

190 - 198 GPa

400.0 °C

179 - 190 GPa

500.0 °C

167 - 180 GPa

600.0 °C

127 - 167 GPa

Poisson's ratio

20.0 °C

0.28 [-]

Shear modulus

20.0 °C

84.95 GPa

Yield strength Rp0.2

200.0 °C

530 MPa

250.0 °C

505 MPa

300.0 °C

480 MPa

350.0 °C

452 MPa

400.0 °C

423 MPa

450.0 °C

382 MPa

500.0 °C

344 MPa

550.0 °C

284 MPa

600.0 °C

206 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

20.0 °C

1.02E-5 1/K

100.0 °C

1.05E-5 1/K

200.0 °C

1.09E-5 - 1.1E-5 1/K

300.0 °C

1.13E-5 - 1.15E-5 1/K

400.0 °C

1.16E-5 - 1.2E-5 1/K

500.0 °C

1.2E-5 - 1.23E-5 1/K

600.0 °C

1.22E-5 - 1.25E-5 1/K

Max service temperature, long

0 - 580 °C

Melting point

1370 - 1530 °C

Typical for Martensitic Stainless Steel

Specific heat capacity

20.0 °C

439 - 460 J/(kg·K)

100.0 °C

474 J/(kg·K)

200.0 °C

498 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

538 J/(kg·K)

500.0 °C

564 J/(kg·K)

600.0 °C

598 J/(kg·K)

Thermal conductivity

20.0 °C

24 W/(m·K)

100.0 °C

24.4 - 25 W/(m·K)

200.0 °C

24.8 - 25 W/(m·K)

300.0 °C

25.1 - 26 W/(m·K)

400.0 °C

25.6 - 26 W/(m·K)

500.0 °C

26 - 26.1 W/(m·K)

600.0 °C

26.4 - 27 W/(m·K)

650.0 °C

29 W/(m·K)

Thermal diffusivity

20.0 °C

7.1 mm²/s

100.0 °C

6.3 mm²/s

200.0 °C

6 mm²/s

300.0 °C

5.7 mm²/s

400.0 °C

5.4 mm²/s

500.0 °C

4.9 mm²/s

600.0 °C

4.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

6E-7 - 6.03E-7 Ω·m

100.0 °C

6.68E-7 Ω·m

200.0 °C

7.43E-7 Ω·m

300.0 °C

8.17E-7 Ω·m

400.0 °C

8.9E-7 Ω·m

500.0 °C

9.62E-7 Ω·m

600.0 °C

1.04E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.18 - 0.24 %

Chromium

11 - 12.5 %

Manganese

0.3 - 0.8 %

Molybdenum

0.8 - 1.2 %

Nickel

0.3 - 0.8 %

Phosphorus

0.04 %

Silicon

0.1 - 0.5 %

Sulfur

0.035 %

Vanadium

0.25 - 0.35 %


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