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DIN 17243 Grade C22.8 – Normalized or Normalized‑Formed (N) High‑Temperature Steel

High temperature steel. Application for shapes and flanges.

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

195 - 207 GPa

200.0 °C

195 - 199 GPa

300.0 °C

185 - 192 GPa

400.0 °C

175 - 184 GPa

500.0 °C

165 - 175 GPa

600.0 °C

155 - 164 GPa

Elongation

20.0 °C

19 - 25 %

Elongation, transverse

20.0 °C

19 - 23 %

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Low Carbon Steel

Shear modulus

23.0 °C

82 GPa

Typical for Low Carbon Steel

Tensile strength

20.0 °C

400 - 540 MPa

Tensile strength, transverse

20.0 °C

400 - 540 MPa

Yield strength

20.0 °C

210 - 250 MPa

Yield strength Rp0.2

20.0 °C

200 - 250 MPa

100.0 °C

190 - 237 MPa

150.0 °C

170 - 216 MPa

200.0 °C

155 - 190 MPa

250.0 °C

135 - 170 MPa

300.0 °C

115 - 150 MPa

350.0 °C

100 - 145 MPa

400.0 °C

80 - 135 MPa

420.0 °C

65 - 90 MPa

450.0 °C

60 - 90 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.19E-5 1/K

100.0 °C

1.1E-5 - 1.25E-5 1/K

200.0 °C

1.2E-5 - 1.3E-5 1/K

300.0 °C

1.3E-5 - 1.36E-5 1/K

400.0 °C

1.35E-5 - 1.41E-5 1/K

500.0 °C

1.4E-5 - 1.45E-5 1/K

600.0 °C

1.4E-5 - 1.49E-5 1/K

Max service temperature

500 °C

Typical for Carbon Steel

Melting point

1480 - 1526 °C

Typical for Low Carbon 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

51 W/(m·K)

100.0 °C

50.8 W/(m·K)

200.0 °C

48.7 W/(m·K)

300.0 °C

45.8 W/(m·K)

400.0 °C

42.5 W/(m·K)

500.0 °C

39.2 W/(m·K)

600.0 °C

36 W/(m·K)

Thermal diffusivity

20.0 °C

14.1 mm²/s

100.0 °C

13.1 mm²/s

200.0 °C

11.7 mm²/s

300.0 °C

10.4 mm²/s

400.0 °C

9 mm²/s

500.0 °C

7.6 mm²/s

600.0 °C

6.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.04E-7 Ω·m

100.0 °C

2.52E-7 Ω·m

200.0 °C

3.24E-7 Ω·m

300.0 °C

4.1E-7 Ω·m

400.0 °C

5.12E-7 Ω·m

500.0 °C

6.31E-7 Ω·m

600.0 °C

7.7E-7 Ω·m

Magnetic

PropertyValueComment

Curie temperature

770 °C

Typical for Low Carbon Steel

Chemical properties

PropertyValue

Aluminium

0.015 - 0.05 %

Carbon

0.18 - 0.23 %

Chromium

0.3 %

Manganese

0.4 - 0.9 %

Phosphorus

0.03 - 0.04 %

Silicon

0.15 - 0.4 %

Sulfur

0.015 - 0.03 %


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