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X12Cr13 Martensitic Steel – EN 10272 Grade, Quenched & Tempered (QT650) for High-Pressure Applications

The martensitic steel grade X12Cr13 acc. to DIN EN 10272 : 2001-01 is used for hot and cold formed rods for pressure vessels.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 - 7.73 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

215 - 217.99 GPa

100.0 °C

212 - 215 GPa

200.0 °C

188 - 205.94 GPa

300.0 °C

164 - 200 GPa

400.0 °C

188.79 - 190 GPa

Elongation

20.0 °C

15 %

Poisson's ratio

20.0 °C

0.29 [-]

100.0 °C

0.29 [-]

200.0 °C

0.29 [-]

300.0 °C

0.31 [-]

400.0 °C

0.31 [-]

Shear modulus

20.0 °C

84.82 GPa

100.0 °C

82.5 GPa

200.0 °C

79.57 GPa

300.0 °C

75.86 GPa

400.0 °C

72 GPa

Tensile strength

20.0 °C

650 - 850 MPa

Yield strength Rp0.2

20.0 °C

450 MPa

100.0 °C

420 MPa

150.0 °C

410 MPa

200.0 °C

400 MPa

250.0 °C

385 MPa

300.0 °C

365 MPa

350.0 °C

335 MPa

400.0 °C

305 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/K

600.0 °C

1.22E-5 1/K

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

25.9 - 30 W/(m·K)

100.0 °C

25.3 W/(m·K)

200.0 °C

25.2 W/(m·K)

300.0 °C

25.2 W/(m·K)

400.0 °C

25.4 W/(m·K)

500.0 °C

25.7 W/(m·K)

600.0 °C

25.9 W/(m·K)

Thermal diffusivity

20.0 °C

7.6 mm²/s

100.0 °C

6.6 mm²/s

200.0 °C

6.1 mm²/s

300.0 °C

5.8 mm²/s

400.0 °C

5.3 mm²/s

500.0 °C

4.8 mm²/s

600.0 °C

4.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

5.59E-7 - 6E-7 Ω·m

100.0 °C

6.4E-7 Ω·m

200.0 °C

7.32E-7 Ω·m

300.0 °C

8.17E-7 Ω·m

400.0 °C

8.97E-7 Ω·m

500.0 °C

9.74E-7 Ω·m

600.0 °C

1.05E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.08 - 0.15 %

Chromium

11.5 - 13.5 %

Manganese

1.5 %

Nickel

0.75 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 - 0.03 %


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