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EN 10222-3 X8Ni9: High‑Performance Nickel Alloy for Cryogenic Applications

The nickel-alloyed cryogenic material X8Ni9, materia number 1.5662 is used in pressure vessel construction. Application for refrigerators, gearbox parts and components in machine and apparatus engineering which are exposed to temperatures up to -200 °C.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.88 g/cm³

27.0 °C

7.84 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

-269.0 °C

205.5 GPa

-200.0 °C

205.2 GPa

-150.0 °C

203.4 GPa

-100.0 °C

201 - 201.4 GPa

-50.0 °C

198.9 GPa

20.0 °C

195 GPa

27.0 °C

195.1 GPa

100.0 °C

190 GPa

200.0 °C

184 GPa

300.0 °C

178 GPa

400.0 °C

170 GPa

Poisson's ratio

-269.0 °C

0.29 [-]

-200.0 °C

0.29 [-]

-150.0 °C

0.29 [-]

-100.0 °C

0.29 [-]

-50.0 °C

0.29 [-]

27.0 °C

0.29 [-]

Shear modulus

-269.0 °C

80 GPa

-200.0 °C

79.8 GPa

-150.0 °C

79 GPa

-100.0 °C

78.2 GPa

-50.0 °C

77.1 GPa

27.0 °C

75.4 GPa

Yield strength Rp0.2

100.0 °C

370 MPa

200.0 °C

335 MPa

250.0 °C

315 MPa

300.0 °C

300 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.02E-5 1/K

20.0 °C

1.1E-5 1/K

100.0 °C

1.14E-5 1/K

200.0 °C

1.18E-5 1/K

300.0 °C

1.21E-5 1/K

400.0 °C

1.25E-5 1/K

Melting point

1316 - 1595 °C

Typical for Nickel Steel

Specific heat capacity

-100.0 °C

442 J/(kg·K)

20.0 °C

464 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

495 J/(kg·K)

300.0 °C

511 J/(kg·K)

400.0 °C

528 J/(kg·K)

Thermal conductivity

-100.0 °C

23.9 W/(m·K)

20.0 °C

30.2 W/(m·K)

100.0 °C

32.8 W/(m·K)

200.0 °C

34.4 W/(m·K)

300.0 °C

34.7 W/(m·K)

400.0 °C

34 W/(m·K)

Thermal diffusivity

20.0 °C

8.3 mm²/s

100.0 °C

8.5 mm²/s

200.0 °C

8.4 mm²/s

300.0 °C

8 mm²/s

400.0 °C

7.3 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

-100.0 °C

2.51E-7 Ω·m

20.0 °C

3.22E-7 Ω·m

100.0 °C

3.73E-7 Ω·m

200.0 °C

4.4E-7 Ω·m

300.0 °C

5.19E-7 Ω·m

400.0 °C

6.13E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.1 %

Manganese

0.3 - 0.8 %

Molybdenum

0.1 %

Nickel

8.5 - 10 %

Phosphorus

0.02 %

Silicon

0.35 %

Sulfur

0.005 - 0.01 %

Vanadium

0.05 %


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    1. EN 10222-3 Grade 12Ni14 – High-Performance Nickel Alloy for Cryogenic Applications
    2. EN 10222-3 Grade X8Ni9: Normalized & Tempered Nickel-Steel for Cryogenic Applications
    3. ASTM A727 Grade A727 – Normalized, Normalized & Tempered, or Quenched & Tempered Steel
    4. EN 10273 Grade 10CrMo9-10: Precision-Processed Steel Bars for High-Pressure Applications
    5. EN 10273 13CrMo4-5 Steel Bars – Normalized & Tempered or Quenched & Tempered for High-Pressure Applications
    6. EN 10222-3 Grade 12Ni14 – Normalized & Tempered Nickel Alloy for Cryogenic Applications
    7. EN 10222-3 Grade 13MnNi6-3: Normalized & Tempered Cryogenic Alloy for Pressure Vessels
    8. EN 10222-3 Grade 15NiMn6: Normalized/Tempered or Quenched/Tempered Nickel Steel
    9. EN 10222-3 X12Ni5: High-Performance Normalized & Tempered Nickel Steel for Low-Temperature Forging
    10. EN 10028-4 Grade X8Ni9: Cryogenic Ni-Alloy Steel (Normalized/Quenched & Tempered)