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EN 10216‑2 Grade X12CrMo91 (Quenched & Tempered) – Premium High‑Temperature Steel for Hydrogenation Vessels

High temperature steel for high pressure hydrogenation vessels. In the annealed condition it is resistant to high pressure hydrogen as well as to aggressive oils. Application: hydration facilities and petroleum distillation facilities for tubes, in the quenched and tempered condition also in the vessel and apparatus construction

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.77 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

211.67 - 218 GPa

95.0 °C

208.22 GPa

100.0 °C

213 - 214 GPa

150.0 °C

204.77 GPa

200.0 °C

206 - 207 GPa

205.0 °C

200.64 GPa

260.0 °C

196.5 GPa

300.0 °C

198 - 199 GPa

315.0 °C

191.67 GPa

370.0 °C

186.85 GPa

400.0 °C

190 GPa

425.0 °C

181.33 GPa

485.0 °C

175.82 GPa

500.0 °C

180 GPa

540.0 °C

170.3 GPa

595.0 °C

165.47 GPa

600.0 °C

167 - 168 GPa

650.0 °C

159.96 GPa

700.0 °C

150 GPa

760.0 °C

137.21 GPa

Elongation

20.0 °C

20 %

Elongation, transverse

20.0 °C

18 %

Poisson's ratio

20.0 °C

0.3 [-]

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

0.31 [-]

540.0 °C

0.31 [-]

595.0 °C

0.3 [-]

650.0 °C

0.33 [-]

760.0 °C

0.33 [-]

Shear modulus

20.0 °C

81.7 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

71.71 GPa

425.0 °C

69.64 GPa

485.0 °C

67.22 GPa

540.0 °C

65.16 GPa

595.0 °C

63.43 GPa

650.0 °C

60.33 GPa

760.0 °C

51.71 GPa

Tensile strength

20.0 °C

590 - 740 MPa

100.0 °C

550 MPa

150.0 °C

525 MPa

200.0 °C

500 MPa

250.0 °C

490 MPa

300.0 °C

480 MPa

350.0 °C

460 MPa

400.0 °C

430 MPa

450.0 °C

405 MPa

500.0 °C

360 MPa

Tensile strength, transverse

20.0 °C

590 - 740 MPa

Yield strength Rp0.2

20.0 °C

390 MPa

100.0 °C

375 MPa

150.0 °C

365 MPa

200.0 °C

355 MPa

250.0 °C

345 MPa

300.0 °C

335 MPa

350.0 °C

325 MPa

400.0 °C

315 MPa

450.0 °C

295 MPa

500.0 °C

275 MPa

Yield strength Rp0.2, transverse

20.0 °C

390 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

1.12E-5 - 1.13E-5 1/K

200.0 °C

1.16E-5 - 1.18E-5 1/K

300.0 °C

1.2E-5 - 1.23E-5 1/K

400.0 °C

1.23E-5 - 1.27E-5 1/K

425.0 °C

1.19E-5 1/K

485.0 °C

1.22E-5 1/K

500.0 °C

1.26E-5 - 1.3E-5 1/K

540.0 °C

1.23E-5 1/K

595.0 °C

1.25E-5 1/K

600.0 °C

1.29E-5 - 1.32E-5 1/K

650.0 °C

1.27E-5 1/K

700.0 °C

1.33E-5 1/K

Melting point

1382 - 1529 °C

Typical for Chromium Molybdenum Steel

Specific heat capacity

20.0 °C

429 J/(kg·K)

100.0 °C

464 - 500 J/(kg·K)

200.0 °C

492 - 530 J/(kg·K)

300.0 °C

511 - 560 J/(kg·K)

400.0 °C

531 - 610 J/(kg·K)

500.0 °C

554 - 680 J/(kg·K)

600.0 °C

585 - 780 J/(kg·K)

700.0 °C

626 J/(kg·K)

Thermal conductivity

20.0 °C

20.7 W/(m·K)

100.0 °C

22.6 - 23 W/(m·K)

200.0 °C

24 - 24.4 W/(m·K)

300.0 °C

25.8 - 26 W/(m·K)

400.0 °C

26.9 - 27 W/(m·K)

500.0 °C

27.8 - 28 W/(m·K)

600.0 °C

28.5 - 29 W/(m·K)

700.0 °C

28.8 W/(m·K)

Thermal diffusivity

20.0 °C

6.2 mm²/s

100.0 °C

5.9 mm²/s

200.0 °C

6 mm²/s

300.0 °C

6 mm²/s

400.0 °C

5.7 mm²/s

500.0 °C

5.4 mm²/s

600.0 °C

4.8 mm²/s

700.0 °C

4 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

5.03E-7 Ω·m

100.0 °C

5.67E-7 - 5.7E-7 Ω·m

200.0 °C

6.47E-7 - 6.5E-7 Ω·m

300.0 °C

7.27E-7 - 7.3E-7 Ω·m

400.0 °C

8.09E-7 - 8.1E-7 Ω·m

500.0 °C

8.9E-7 Ω·m

600.0 °C

9.7E-7 - 9.72E-7 Ω·m

700.0 °C

1.06E-6 Ω·m

Chemical properties

PropertyValue

Carbon

0.15 %

Chromium

8 - 10 %

Manganese

0.3 - 0.6 %

Molybdenum

0.9 - 1.1 %

Phosphorus

0.03 %

Silicon

0.25 - 1 %

Sulfur

0.03 %


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