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EN 10213 Grade GX23CrMoV12-1: Quenched and Tempered Steel for High‑Temperature Applications

Material GX23CrMoV12-1 is equivalent to trademark G-X 22 CrMoV 12-1 acc. to DIN17245-87. It is due to its high creep and thermal strength (except at temperatures around 600 °C) applicated if fast temperature changes or even thermal shocks may occur. The well weldable material is used at room temperature and increased temperatures (up to approx. 600 °C) for turbine casings, valve boxes and steam collecting boxes as well as for reeling segments of wide strip lines.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

216 GPa

100.0 °C

209 GPa

200.0 °C

200 GPa

300.0 °C

190 GPa

400.0 °C

179 GPa

500.0 °C

167 GPa

600.0 °C

127 GPa

Elongation

20.0 °C

15 %

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Martensitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Martensitic Stainless Steel

Tensile strength

20.0 °C

740 - 880 MPa

Yield strength Rp0.2

20.0 °C

540 MPa

200.0 °C

450 MPa

300.0 °C

430 MPa

350.0 °C

410 MPa

400.0 °C

390 MPa

450.0 °C

370 MPa

500.0 °C

340 MPa

550.0 °C

290 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.05E-5 1/K

200.0 °C

1.1E-5 1/K

300.0 °C

1.15E-5 1/K

400.0 °C

1.19E-5 1/K

500.0 °C

1.22E-5 1/K

600.0 °C

1.25E-5 1/K

Max service temperature, long

300 - 610 °C

Melting point

1370 - 1530 °C

Typical for Martensitic Stainless Steel

Specific heat capacity

20.0 °C

460 J/(kg·K)

Thermal conductivity

20.0 °C

24 W/(m·K)

300.0 °C

25 W/(m·K)

400.0 °C

26 W/(m·K)

500.0 °C

27 W/(m·K)

600.0 °C

27 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

4.5E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.2 - 0.26 %

Chromium

11.3 - 12.2 %

Copper

0.3 %

Manganese

0.5 - 0.8 %

Molybdenum

1 - 1.2 %

Nickel

1 %

Phosphorus

0.03 %

Silicon

0.4 %

Sulfur

0.02 %

Tungsten

0.5 %

Vanadium

0.25 - 0.35 %


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