EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT)

EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT) introduction

Alloy heat resistant and temperable high-grade steel for pressure vessel application at increased temperatures.
Application: turbine parts, high pressure tubes

Equivalent material: DIN 20MnMoNi4-5, IS SQV2A, IS SQV2B, ASTM A533 Grade B, ASTM A533 Grade C, ASTM A533 Grade D, UNS K12529, UNS K12539, UNS K12554, ASTM Grade B, ASTM K12539, IS 20MnMoNi4-5, DIN 1.6311, EN 1.6311, JIS SQV2B, JIS SFVQ1A, JIS SFVQ1B, JIS SQV2A, JIS SFVQ2B, ASTM Grade Type B

EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT) general

Property Temperature Value Condition Related Standards Shape
Density 20 °C Density of 7.84 g/cm³ quenched and tempered (+QT) EN 10028-2 Flat
- 20 °C Density of 7.84 - 7.86 g/cm³ quenched and tempered (+QT) EN 10028-2 Flat
- 20 °C Density of 7.86 g/cm³ quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat

EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT) thermal

Property Temperature Value Condition Related Standards Shape Comment
Coefficient of thermal expansion -100 °C Coefficient of thermal expansion of 1.05e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 20 °C Coefficient of thermal expansion of 1.15e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Coefficient of thermal expansion of 1.21e-05 - 1.24e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Coefficient of thermal expansion of 1.21e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Coefficient of thermal expansion of 1.24e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Coefficient of thermal expansion of 1.27e-05 - 1.29e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Coefficient of thermal expansion of 1.27e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Coefficient of thermal expansion of 1.29e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Coefficient of thermal expansion of 1.32e-05 - 1.35e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Coefficient of thermal expansion of 1.32e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 300 °C Coefficient of thermal expansion of 1.35e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Coefficient of thermal expansion of 1.36e-05 - 1.39e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Coefficient of thermal expansion of 1.36e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 400 °C Coefficient of thermal expansion of 1.39e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Coefficient of thermal expansion of 1.4e-05 - 1.44e-05 1/K quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Coefficient of thermal expansion of 1.4e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 500 °C Coefficient of thermal expansion of 1.44e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 600 °C Coefficient of thermal expansion of 1.44e-05 1/K quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
Max service temperature - Max service temperature of 20 - 400 °C quenched and tempered (+QT) EN 10028-2 Flat Long
Melting point - Melting point of 1382 - 1529 °C - - - Typical for Nickel Molybdenum Steel
Specific heat capacity -100 °C Specific heat capacity of 423 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 20 °C Specific heat capacity of 430 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Specific heat capacity of 430 - 461 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Specific heat capacity of 461 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Specific heat capacity of 479 - 500 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Specific heat capacity of 479 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Specific heat capacity of 500 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Specific heat capacity of 499 - 540 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Specific heat capacity of 499 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Specific heat capacity of 540 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Specific heat capacity of 517 - 580 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Specific heat capacity of 517 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 300 °C Specific heat capacity of 580 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Specific heat capacity of 536 - 620 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Specific heat capacity of 536 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 400 °C Specific heat capacity of 620 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Specific heat capacity of 558 - 690 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Specific heat capacity of 558 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 500 °C Specific heat capacity of 690 J/(kg·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 600 °C Specific heat capacity of 587 J/(kg·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
Thermal conductivity 20 °C Thermal conductivity of 42 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Thermal conductivity of 42 - 44.3 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Thermal conductivity of 44.3 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Thermal conductivity of 43 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Thermal conductivity of 43 - 44 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Thermal conductivity of 44 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Thermal conductivity of 42.9 - 43 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Thermal conductivity of 42.9 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Thermal conductivity of 43 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Thermal conductivity of 40.8 - 41 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Thermal conductivity of 40.8 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 300 °C Thermal conductivity of 41 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Thermal conductivity of 38.4 - 39 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Thermal conductivity of 38.4 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 400 °C Thermal conductivity of 39 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Thermal conductivity of 36 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Thermal conductivity of 36 - 36.3 W/(m·K) quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Thermal conductivity of 36.3 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 600 °C Thermal conductivity of 33.9 W/(m·K) quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
Thermal diffusivity 20 °C Thermal diffusivity of 12.2 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Thermal diffusivity of 11.3 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Thermal diffusivity of 10.3 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 300 °C Thermal diffusivity of 9.2 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 400 °C Thermal diffusivity of 8.1 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 500 °C Thermal diffusivity of 7 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 600 °C Thermal diffusivity of 5.7 mm²/s quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -

EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT) chemical

Property Value Condition Related Standards Shape
Aluminium Aluminium of 0.01 - 0.05 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet
Carbon Carbon of 0.15 - 0.23 % quenched and tempered (+QT) EN 10028-2 Flat
- Carbon of 0.23 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet
Chromium Chromium of 0.2 % quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet
Copper Copper of 0.2 % quenched and tempered (+QT) EN 10028-2 Flat
Manganese Manganese of 1 - 1.5 % quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet
Molybdenum Molybdenum of 0.4 - 0.6 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet
- Molybdenum of 0.45 - 0.6 % quenched and tempered (+QT) EN 10028-2 Flat
Nickel Nickel of 0.4 - 0.8 % quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet
Nitrogen Nitrogen of 0.012 % quenched and tempered (+QT) EN 10028-2 Flat
- Nitrogen of 0.015 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet
Phosphorus Phosphorus of 0.02 % quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet
Silicon Silicon of 0.15 - 0.35 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet
- Silicon of 0.4 % quenched and tempered (+QT) EN 10028-2 Flat
Sulfur Sulfur of 0.01 % quenched and tempered (+QT) EN 10028-2 Flat
- Sulfur of 0.015 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet
Vanadium Vanadium of 0.02 % quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet

EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT) electrical

Property Temperature Value Condition Related Standards Shape Comment
Electrical conductivity - Electrical conductivity of 7 S/m - - - Predicted Value
Electrical resistivity 20 °C Electrical resistivity of 2.35e-07 - 2.5e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Electrical resistivity of 2.35e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 20 °C Electrical resistivity of 2.5e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Electrical resistivity of 2.91e-07 - 3e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Electrical resistivity of 2.91e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Electrical resistivity of 3e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Electrical resistivity of 3.68e-07 - 3.7e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 200 °C Electrical resistivity of 3.68e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Electrical resistivity of 3.7e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Electrical resistivity of 4.6e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 400 °C Electrical resistivity of 5.6e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Electrical resistivity of 5.6e-07 - 5.66e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Electrical resistivity of 5.66e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 500 °C Electrical resistivity of 6.8e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Electrical resistivity of 6.8e-07 - 6.81e-07 Ω·m quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Electrical resistivity of 6.81e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 600 °C Electrical resistivity of 8.18e-07 Ω·m quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -

EN 10028-2 Grade 20MnMoNi4-5 quenched and tempered (+QT) mechanical

Property Temperature Value Condition Related Standards Shape Comment
Elastic modulus -100 °C Elastic modulus of 217 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 20 °C Elastic modulus of 211 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Elastic modulus of 211 - 212 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Elastic modulus of 212 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 100 °C Elastic modulus of 206 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Elastic modulus of 206 - 207 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 100 °C Elastic modulus of 207 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 200 °C Elastic modulus of 199 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 300 °C Elastic modulus of 191 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Elastic modulus of 191 - 192 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 300 °C Elastic modulus of 192 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 400 °C Elastic modulus of 183 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Elastic modulus of 183 - 184 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 400 °C Elastic modulus of 184 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 500 °C Elastic modulus of 173 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Elastic modulus of 173 - 175 GPa quenched and tempered (+QT) EN 10028-2 Flat -
- 500 °C Elastic modulus of 175 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
- 600 °C Elastic modulus of 164 GPa quenched and tempered (+QT) EN 10028-2, SEW 028 Flat, Sheet -
Elongation - Elongation of 15.0 % - - - Predicted Value, A200
- - Elongation of 16.0 % - - - Predicted Value, A80 Transverse
- - Elongation of 16.4 % - - - Predicted Value, A80
- - Elongation of 18.0 % - - - Predicted Value, A5
- - Elongation of 20.6 % - - - Predicted Value, A50
- 20 °C Elongation of 18 % quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Elongation of 18 % quenched and tempered (+QT) EN 10028-2 Flat -
Hardness, Brinell - Hardness, Brinell of 251 [-] - - - Predicted Value, Transverse
Poisson's ratio - Poisson's ratio of 0.29 [-] - - - Typical for Nickel Molybdenum Steel
Reduction of area - Reduction of area of 42.9 % - - - Predicted Value
- - Reduction of area of 43.6 % - - - Predicted Value, Transverse
Shear modulus - Shear modulus of 80.9 GPa - - - Predicted Value
Shear strength - Shear strength of 617.4 MPa - - - Predicted Value
Tensile strength 20 °C Tensile strength of 560 - 750 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 560 - 730 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 560 - 710 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 560 - 700 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 560 - 750 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 560 - 730 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 560 - 710 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 560 - 700 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 570 - 750 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 570 - 730 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 570 - 710 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 570 - 700 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 570 - 750 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 570 - 730 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 570 - 710 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 570 - 700 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 590 - 750 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 590 - 730 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 590 - 710 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 590 - 700 MPa quenched and tempered (+QT) SEW 028, EN 10028-2 Sheet, Flat Transverse
- 20 °C Tensile strength of 590 - 750 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 590 - 730 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 590 - 710 MPa quenched and tempered (+QT) EN 10028-2 Flat -
- 20 °C Tensile strength of 590 - 700 MPa quenched and tempered (+QT) EN 10028-2 Flat -

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