EN 10269 Grade X8Ni9 quenched and tempered (+QT)

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Description

Low-temperature Ni-alloyed steel for pressure vessel construction, for refrigerators, gearbox parts and components in machine and apparatus engineering which are exposed temperatures up to -200 °C Further application for mounting elements at lower temperatures.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueTemperature

Density

7.88 g/cm³

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20.0 °C

7.84 g/cm³

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27.0 °C

Mechanical

PropertyValueTemperature

Elastic modulus

205.5 GPa

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-269.0 °C

205.2 GPa

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-200.0 °C

203.4 GPa

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-150.0 °C

201 - 201.4 GPa

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-100.0 °C

198.9 GPa

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-50.0 °C

195 GPa

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20.0 °C

195.1 GPa

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27.0 °C

190 GPa

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100.0 °C

184 GPa

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200.0 °C

178 GPa

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300.0 °C

170 GPa

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400.0 °C

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Elongation

18 %

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20.0 °C

Poisson's ratio

0.29 [-]

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-269.0 °C

0.29 [-]

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-200.0 °C

0.29 [-]

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-150.0 °C

0.29 [-]

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-100.0 °C

0.29 [-]

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-50.0 °C

0.29 [-]

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27.0 °C

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Reduction of area

50 %

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20.0 °C

Shear modulus

80 GPa

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-269.0 °C

79.8 GPa

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-200.0 °C

79 GPa

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-150.0 °C

78.2 GPa

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-100.0 °C

77.1 GPa

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-50.0 °C

75.4 GPa

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27.0 °C

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Tensile strength

680 - 820 MPa

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20.0 °C

Yield strength Rp0.2

575 - 585 MPa

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20.0 °C

Thermal

PropertyValueTemperatureComment

Coefficient of thermal expansion

1.02E-5 1/K

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-100.0 °C

1.1E-5 1/K

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20.0 °C

1.14E-5 1/K

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100.0 °C

1.18E-5 1/K

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200.0 °C

1.21E-5 1/K

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300.0 °C

1.25E-5 1/K

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400.0 °C

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Max service temperature, long

-200 - 0 °C

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Melting point

1316 - 1595 °C

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Typical for Nickel Steel

Specific heat capacity

442 J/(kg·K)

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-100.0 °C

464 J/(kg·K)

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20.0 °C

479 J/(kg·K)

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100.0 °C

495 J/(kg·K)

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200.0 °C

511 J/(kg·K)

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300.0 °C

528 J/(kg·K)

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400.0 °C

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Thermal conductivity

23.9 W/(m·K)

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-100.0 °C

30.2 W/(m·K)

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20.0 °C

32.8 W/(m·K)

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100.0 °C

34.4 W/(m·K)

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200.0 °C

34.7 W/(m·K)

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300.0 °C

34 W/(m·K)

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400.0 °C

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Thermal diffusivity

8.3 mm²/s

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20.0 °C

8.5 mm²/s

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100.0 °C

8.4 mm²/s

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200.0 °C

8 mm²/s

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300.0 °C

7.3 mm²/s

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400.0 °C

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Electrical

PropertyValueTemperature

Electrical resistivity

2.51E-7 Ω·m

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-100.0 °C

3.22E-7 Ω·m

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20.0 °C

3.73E-7 Ω·m

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100.0 °C

4.4E-7 Ω·m

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200.0 °C

5.19E-7 Ω·m

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300.0 °C

6.13E-7 Ω·m

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400.0 °C

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Chemical properties

Property

Carbon

0.1 %

Manganese

0.3 - 0.8 %

Molybdenum

0.1 %

Nickel

8.5 - 10 %

Phosphorus

0.02 %

Silicon

0.35 %

Sulfur

0.01 %

Vanadium

0.05 %