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DIN 17176 12CrMo19-5 Soft Annealed Steel – High‑Temperature, Scale‑Resistant, Chemically Robust Solution

High temperature steel for high pressure hydrogenation vessels. It is scale resistant up to 650 °C as well as chemical resistant to aggressive (e.g. sulphurous) oils. Application: hydration facilities and petroleum distillation facilities for tubes and shapes, in the quenched and tempered condition also in the steam boiler construction for overheater tubes and collectors

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.77 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

212 - 212.36 GPa

95.0 °C

208.22 GPa

100.0 °C

207 - 212 GPa

150.0 °C

204.77 GPa

200.0 °C

199 - 205 GPa

205.0 °C

200.64 GPa

260.0 °C

195.81 GPa

300.0 °C

192 - 198 GPa

315.0 °C

191.67 GPa

370.0 °C

187.54 GPa

400.0 °C

184 - 189 GPa

425.0 °C

182.71 GPa

485.0 °C

177.89 GPa

500.0 °C

175 - 180 GPa

540.0 °C

172.37 GPa

595.0 °C

166.85 GPa

600.0 °C

164 - 168 GPa

650.0 °C

159.96 GPa

705.0 °C

151.69 GPa

760.0 °C

139.27 GPa

Elongation

20.0 °C

18 - 22 %

Elongation, transverse

20.0 °C

18 %

Hardness, Brinell

20.0 °C

163 - 220 [-]

Poisson's ratio

20.0 °C

0.31 [-]

95.0 °C

0.3 [-]

150.0 °C

0.3 [-]

205.0 °C

0.3 [-]

260.0 °C

0.3 [-]

315.0 °C

0.3 [-]

370.0 °C

0.3 [-]

425.0 °C

0.3 [-]

485.0 °C

0.32 [-]

540.0 °C

0.3 [-]

595.0 °C

0.31 [-]

650.0 °C

0.32 [-]

705.0 °C

0.33 [-]

760.0 °C

0.33 [-]

Shear modulus

20.0 °C

81.36 GPa

95.0 °C

80.32 GPa

150.0 °C

78.95 GPa

205.0 °C

77.22 GPa

260.0 °C

75.5 GPa

315.0 °C

73.77 GPa

370.0 °C

72.05 GPa

425.0 °C

70.33 GPa

485.0 °C

67.57 GPa

540.0 °C

66.19 GPa

595.0 °C

63.78 GPa

650.0 °C

60.67 GPa

705.0 °C

57.23 GPa

760.0 °C

52.4 GPa

Tensile strength

20.0 °C

410 - 540 MPa

100.0 °C

360 MPa

150.0 °C

350 MPa

200.0 °C

340 MPa

250.0 °C

340 MPa

300.0 °C

340 MPa

350.0 °C

330 MPa

400.0 °C

320 MPa

450.0 °C

300 MPa

500.0 °C

270 MPa

Tensile strength, transverse

20.0 °C

395 - 560 MPa

Yield strength

20.0 °C

175 MPa

Yield strength Rp0.2

20.0 °C

175 MPa

100.0 °C

156 MPa

150.0 °C

149 - 150 MPa

200.0 °C

142 - 148 MPa

250.0 °C

138 - 147 MPa

300.0 °C

132 - 145 MPa

350.0 °C

128 - 142 MPa

400.0 °C

125 - 137 MPa

450.0 °C

119 - 129 MPa

500.0 °C

112 - 116 MPa

Yield strength Rp0.2, transverse

20.0 °C

175 MPa

100.0 °C

136 - 156 MPa

150.0 °C

129 - 149 MPa

200.0 °C

122 - 142 MPa

250.0 °C

118 - 138 MPa

300.0 °C

112 - 132 MPa

350.0 °C

108 - 128 MPa

400.0 °C

105 - 125 MPa

450.0 °C

99 - 119 MPa

500.0 °C

92 - 112 MPa

Yield strength, transverse

20.0 °C

155 - 175 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1E-5 1/K

20.0 °C

1.08E-5 1/K

100.0 °C

1.13E-5 - 1.14E-5 1/K

200.0 °C

1.18E-5 - 1.2E-5 1/K

300.0 °C

1.23E-5 - 1.24E-5 1/K

400.0 °C

1.27E-5 - 1.28E-5 1/K

425.0 °C

1.24E-5 1/K

485.0 °C

1.26E-5 1/K

500.0 °C

1.3E-5 - 1.32E-5 1/K

540.0 °C

1.28E-5 1/K

595.0 °C

1.29E-5 1/K

600.0 °C

1.32E-5 - 1.34E-5 1/K

650.0 °C

1.32E-5 1/K

700.0 °C

1.33E-5 1/K

705.0 °C

1.32E-5 1/K

Max service temperature, long

0 - 650 °C

Melting point

1382 - 1529 °C

Typical for Chromium Molybdenum Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 - 490 J/(kg·K)

200.0 °C

499 - 530 J/(kg·K)

300.0 °C

517 - 560 J/(kg·K)

400.0 °C

536 - 610 J/(kg·K)

500.0 °C

558 - 670 J/(kg·K)

600.0 °C

587 - 760 J/(kg·K)

Thermal conductivity

20.0 °C

20.3 W/(m·K)

100.0 °C

22.7 - 23 W/(m·K)

200.0 °C

25 W/(m·K)

300.0 °C

26 - 26.4 W/(m·K)

400.0 °C

27 - 27.3 W/(m·K)

500.0 °C

27.7 - 28 W/(m·K)

600.0 °C

27.8 - 28 W/(m·K)

700.0 °C

27.5 W/(m·K)

Thermal diffusivity

20.0 °C

5.7 mm²/s

100.0 °C

5.9 mm²/s

200.0 °C

6.1 mm²/s

300.0 °C

6 mm²/s

400.0 °C

5.8 mm²/s

500.0 °C

5.4 mm²/s

600.0 °C

4.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

5.14E-7 Ω·m

100.0 °C

5.6E-7 - 5.63E-7 Ω·m

200.0 °C

6.3E-7 - 6.32E-7 Ω·m

300.0 °C

7.1E-7 - 7.12E-7 Ω·m

400.0 °C

7.97E-7 - 8E-7 Ω·m

500.0 °C

8.9E-7 - 8.93E-7 Ω·m

600.0 °C

9.96E-7 - 1E-6 Ω·m

700.0 °C

1.12E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.06 - 0.15 %

Chromium

4 - 6 %

Manganese

0.3 - 60 %

Molybdenum

0.45 - 0.65 %

Phosphorus

0.03 - 0.04 %

Silicon

0.3 - 0.5 %

Sulfur

0.03 - 0.035 %


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