EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT)

EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT) introduction

Low-temperature nickel steel forging for pressure purposes.,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.

Equivalent material: ISO X8Ni9, ASTM A420 Grade WPL8, ASTM A522TypeI, UNS K81340, DIN X8Ni9, DIN 1.5662, AFNOR X8Ni9, BS 1501.509, BS 50, BS X8Ni9, UNI X10Ni9, UNE XBNi09, JIS SL9N53, JIS STBL690, JIS SL9N520, JIS SL9N590, JIS STPL690, EN 1.5662, ISO X9Ni9, ISO X10Ni9, ASTM A844

EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT) general

Property Temperature Value
Density 20.0 °C Density of 7.88 g/cm³
- 27.0 °C Density of 7.84 g/cm³

EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT) thermal

Property Temperature Value
Coefficient of thermal expansion -100.0 °C Coefficient of thermal expansion of 1.02E-5 1/K
- 20.0 °C Coefficient of thermal expansion of 1.1E-5 1/K
- 100.0 °C Coefficient of thermal expansion of 1.14E-5 1/K
- 200.0 °C Coefficient of thermal expansion of 1.18E-5 1/K
- 300.0 °C Coefficient of thermal expansion of 1.21E-5 1/K
- 400.0 °C Coefficient of thermal expansion of 1.25E-5 1/K
Specific heat capacity -100.0 °C Specific heat capacity of 442 J/(kg·K)
- 20.0 °C Specific heat capacity of 464 J/(kg·K)
- 100.0 °C Specific heat capacity of 479 J/(kg·K)
- 200.0 °C Specific heat capacity of 495 J/(kg·K)
- 300.0 °C Specific heat capacity of 511 J/(kg·K)
- 400.0 °C Specific heat capacity of 528 J/(kg·K)
Thermal conductivity -100.0 °C Thermal conductivity of 23.9 W/(m·K)
- 20.0 °C Thermal conductivity of 30.2 W/(m·K)
- 100.0 °C Thermal conductivity of 32.8 W/(m·K)
- 200.0 °C Thermal conductivity of 34.4 W/(m·K)
- 300.0 °C Thermal conductivity of 34.7 W/(m·K)
- 400.0 °C Thermal conductivity of 34 W/(m·K)
Thermal diffusivity 20.0 °C Thermal diffusivity of 8.3 mm²/s
- 100.0 °C Thermal diffusivity of 8.5 mm²/s
- 200.0 °C Thermal diffusivity of 8.4 mm²/s
- 300.0 °C Thermal diffusivity of 8 mm²/s
- 400.0 °C Thermal diffusivity of 7.3 mm²/s

EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT) magnetic

Property Value
Carbon Carbon of 0.1 %
Manganese Manganese of 0.3 - 0.8 %
Molybdenum Molybdenum of 0.1 %
Nickel Nickel of 8.5 - 10 %
Phosphorus Phosphorus of 0.02 %
Silicon Silicon of 0.35 %
Sulfur Sulfur of 0.005 - 0.01 %
Vanadium Vanadium of 0.05 %

EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT) electrical

Property Temperature Value
Electrical resistivity -100.0 °C Electrical resistivity of 2.51E-7 Ω·m
- 20.0 °C Electrical resistivity of 3.22E-7 Ω·m
- 100.0 °C Electrical resistivity of 3.73E-7 Ω·m
- 200.0 °C Electrical resistivity of 4.4E-7 Ω·m
- 300.0 °C Electrical resistivity of 5.19E-7 Ω·m
- 400.0 °C Electrical resistivity of 6.13E-7 Ω·m

EN 10222-3 Grade X8Ni9 normalized, normalized and tempered (+N+NT) mechanical

Property Temperature Value
Elastic modulus -269.0 °C Elastic modulus of 205.5 GPa
- -200.0 °C Elastic modulus of 205.2 GPa
- -150.0 °C Elastic modulus of 203.4 GPa
- -100.0 °C Elastic modulus of 201 - 201.4 GPa
- -50.0 °C Elastic modulus of 198.9 GPa
- 20.0 °C Elastic modulus of 195 GPa
- 27.0 °C Elastic modulus of 195.1 GPa
- 100.0 °C Elastic modulus of 190 GPa
- 200.0 °C Elastic modulus of 184 GPa
- 300.0 °C Elastic modulus of 178 GPa
- 400.0 °C Elastic modulus of 170 GPa
Elongation 20.0 °C Elongation of 18 %
Poisson's ratio -269.0 °C Poisson's ratio of 0.29 [-]
- -200.0 °C Poisson's ratio of 0.29 [-]
- -150.0 °C Poisson's ratio of 0.29 [-]
- -100.0 °C Poisson's ratio of 0.29 [-]
- -50.0 °C Poisson's ratio of 0.29 [-]
- 27.0 °C Poisson's ratio of 0.29 [-]
Shear modulus -269.0 °C Shear modulus of 80 GPa
- -200.0 °C Shear modulus of 79.8 GPa
- -150.0 °C Shear modulus of 79 GPa
- -100.0 °C Shear modulus of 78.2 GPa
- -50.0 °C Shear modulus of 77.1 GPa
- 27.0 °C Shear modulus of 75.4 GPa
Tensile strength 20.0 °C Tensile strength of 640 - 840 MPa
Yield strength 20.0 °C Yield strength of 480 - 490 MPa

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