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DIN 17155 Grade 17Mn4 Steel – Normalized or Normalized Formed (+N) for High-Temperature Applications

High temperature steel for the steam and pressure vessel construction. Max. operating temperature: 530 °C, also in the nuclear engineering. Application: collectors, distributor, flanges, shapes

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 - 7.85 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 - 208 GPa

200.0 °C

199 - 201 GPa

300.0 °C

192 - 193 GPa

400.0 °C

184 - 185 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation

20.0 °C

20 - 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

440 - 580 MPa

Yield strength Rp0.2

20.0 °C

230 - 290 MPa

100.0 °C

225 MPa

150.0 °C

210 MPa

200.0 °C

180 - 245 MPa

250.0 °C

165 - 225 MPa

300.0 °C

150 - 205 MPa

350.0 °C

135 - 175 MPa

400.0 °C

120 - 155 MPa

450.0 °C

100 - 135 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

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

200.0 °C

1.29E-5 - 1.3E-5 1/K

300.0 °C

1.34E-5 - 1.36E-5 1/K

400.0 °C

1.4E-5 - 1.41E-5 1/K

500.0 °C

1.43E-5 - 1.45E-5 1/K

600.0 °C

1.46E-5 - 1.49E-5 1/K

Max service temperature

500 °C

Typical for Carbon Steel

Max service temperature, long

0 - 530 °C

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 - 500 J/(kg·K)

200.0 °C

499 - 540 J/(kg·K)

300.0 °C

517 - 580 J/(kg·K)

400.0 °C

536 - 620 J/(kg·K)

500.0 °C

558 - 690 J/(kg·K)

600.0 °C

587 - 780 J/(kg·K)

Thermal conductivity

20.0 °C

46.5 - 51 W/(m·K)

100.0 °C

47 - 50.8 W/(m·K)

200.0 °C

45.9 - 48.7 W/(m·K)

300.0 °C

43.5 - 45.8 W/(m·K)

400.0 °C

40.9 - 42.5 W/(m·K)

500.0 °C

38 - 39.2 W/(m·K)

600.0 °C

35 - 36 W/(m·K)

Thermal diffusivity

20.0 °C

12.9 - 14.1 mm²/s

100.0 °C

12.2 - 13.1 mm²/s

200.0 °C

11.1 - 11.7 mm²/s

300.0 °C

9.9 - 10.4 mm²/s

400.0 °C

8.7 - 9 mm²/s

500.0 °C

7.3 - 7.6 mm²/s

600.0 °C

5.9 - 6.1 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.04E-7 - 2.24E-7 Ω·m

100.0 °C

2.52E-7 - 2.71E-7 Ω·m

200.0 °C

3.24E-7 - 3.44E-7 Ω·m

300.0 °C

4.1E-7 - 4.31E-7 Ω·m

400.0 °C

5.12E-7 - 5.32E-7 Ω·m

500.0 °C

6.31E-7 - 6.5E-7 Ω·m

600.0 °C

7.7E-7 - 7.9E-7 Ω·m

Magnetic

PropertyValueComment

Curie temperature

770 °C

Typical for Low Carbon Steel

Chemical properties

PropertyValue

Aluminium

0.015 - 0.05 %

Carbon

0.14 - 0.2 %

Chromium

0.25 - 0.3 %

Manganese

0.9 - 1.2 %

Molybdenum

1 %

Nickel

0.3 %

Niobium

0.01 %

Phosphorus

0.04 %

Silicon

0.2 - 0.4 %

Sulfur

0.03 %

Titanium

0.02 %

Vanadium

0.03 %


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