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EN 10222-2 Grade 14MoV6-3 – Normalized & Tempered (NT) High-Temperature Steel for Pressure Vessels

The high temperature material 14MoV6-3, material number 1.7715, is used in pressure vessel construction. It is owing to its good high-temperature strength properties favorable at high pressures in a temperature range from 500 to 560 °C. Application for welded collars and flanges.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 g/cm³

50.0 °C

7.84 g/cm³

100.0 °C

7.82 g/cm³

150.0 °C

7.81 g/cm³

200.0 °C

7.79 g/cm³

250.0 °C

7.78 g/cm³

300.0 °C

7.76 g/cm³

350.0 °C

7.74 g/cm³

400.0 °C

7.72 g/cm³

450.0 °C

7.71 g/cm³

500.0 °C

7.69 g/cm³

550.0 °C

7.67 g/cm³

600.0 °C

7.65 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 - 212.78 GPa

50.0 °C

211.5 GPa

100.0 °C

207 - 208.66 GPa

150.0 °C

205.23 GPa

200.0 °C

199 - 201.6 GPa

250.0 °C

197.77 GPa

300.0 °C

192 - 193.94 GPa

350.0 °C

189.92 GPa

400.0 °C

184 - 186.1 GPa

450.0 °C

181.98 GPa

500.0 °C

175 - 177.86 GPa

550.0 °C

173.74 GPa

600.0 °C

164 - 169.42 GPa

Elongation

20.0 °C

18 - 20 %

Poisson's ratio

20.0 °C

0.29 [-]

50.0 °C

0.29 [-]

100.0 °C

0.28 [-]

150.0 °C

0.29 [-]

200.0 °C

0.29 [-]

250.0 °C

0.29 [-]

300.0 °C

0.3 [-]

350.0 °C

0.3 [-]

400.0 °C

0.3 [-]

450.0 °C

0.31 [-]

500.0 °C

0.31 [-]

550.0 °C

0.32 [-]

600.0 °C

0.32 [-]

Shear modulus

20.0 °C

82.8 GPa

50.0 °C

82.31 GPa

100.0 °C

81.23 GPa

150.0 °C

79.76 GPa

200.0 °C

78.28 GPa

250.0 °C

76.62 GPa

300.0 °C

74.85 GPa

350.0 °C

73.18 GPa

400.0 °C

71.42 GPa

450.0 °C

69.65 GPa

500.0 °C

67.79 GPa

550.0 °C

66.02 GPa

600.0 °C

64.16 GPa

Tensile strength

20.0 °C

460 - 610 MPa

Yield strength

20.0 °C

300 MPa

Yield strength Rp0.2

20.0 °C

290 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.05E-5 1/K

20.0 °C

1.15E-5 1/K

100.0 °C

1.21E-5 1/K

200.0 °C

1.27E-5 1/K

300.0 °C

1.32E-5 1/K

400.0 °C

1.36E-5 1/K

500.0 °C

1.4E-5 1/K

600.0 °C

1.44E-5 1/K

Max service temperature, long

400 - 550 °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 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

46.3 W/(m·K)

100.0 °C

47.1 W/(m·K)

200.0 °C

46.2 W/(m·K)

300.0 °C

44.1 W/(m·K)

400.0 °C

41.3 W/(m·K)

500.0 °C

38.6 W/(m·K)

600.0 °C

35.9 W/(m·K)

Thermal diffusivity

20.0 °C

12.8 mm²/s

100.0 °C

12.1 mm²/s

200.0 °C

11.1 mm²/s

300.0 °C

10 mm²/s

400.0 °C

8.8 mm²/s

500.0 °C

7.4 mm²/s

600.0 °C

4.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.25E-7 Ω·m

50.0 °C

2.41E-7 Ω·m

100.0 °C

2.72E-7 Ω·m

150.0 °C

3.04E-7 Ω·m

200.0 °C

3.42E-7 Ω·m

250.0 °C

3.83E-7 Ω·m

300.0 °C

4.26E-7 Ω·m

350.0 °C

4.74E-7 Ω·m

400.0 °C

5.26E-7 Ω·m

450.0 °C

5.83E-7 Ω·m

500.0 °C

6.4E-7 Ω·m

550.0 °C

7.04E-7 Ω·m

600.0 °C

7.73E-7 Ω·m

Chemical properties

PropertyValue

Aluminium

0.02 %

Carbon

0.1 - 0.18 %

Chromium

0.3 - 0.6 %

Manganese

0.4 - 0.7 %

Molybdenum

0.5 - 0.7 %

Phosphorus

0.03 %

Silicon

0.4 %

Sulfur

0.01 - 0.015 %

Tin

0.03 %

Vanadium

0.22 - 0.28 %


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