EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT)
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EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT)

Equivalent material: EN 30CrMoV9, DIN 1.7707, AFNOR 30CrMoV9, BS 30CrMoV9, AISI E4340, SAE E4340, EN 1.7707, GOST 30Ch3MF, UNS G43406

EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT) general

Property Temperature Value
Density 20.0 °C Density of 7.8 g/cm³

EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion -100.0 °C Coefficient of thermal expansion of 1.05E-5 1/K -
- 20.0 °C Coefficient of thermal expansion of 1.15E-5 1/K -
- 100.0 °C Coefficient of thermal expansion of 1.21E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.27E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.32E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.36E-5 1/K -
- 500.0 °C Coefficient of thermal expansion of 1.4E-5 1/K -
- 600.0 °C Coefficient of thermal expansion of 1.44E-5 1/K -
Melting point - Melting point of 1382 - 1529 °C Typical for Chromium Molybdenum Steel
Specific heat capacity -100.0 °C Specific heat capacity of 423 J/(kg·K) -
- 20.0 °C Specific heat capacity of 461 J/(kg·K) -
- 100.0 °C Specific heat capacity of 479 J/(kg·K) -
- 200.0 °C Specific heat capacity of 499 J/(kg·K) -
- 300.0 °C Specific heat capacity of 517 J/(kg·K) -
- 400.0 °C Specific heat capacity of 536 J/(kg·K) -
- 500.0 °C Specific heat capacity of 558 J/(kg·K) -
- 600.0 °C Specific heat capacity of 587 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 33.7 W/(m·K) -
- 100.0 °C Thermal conductivity of 36.2 W/(m·K) -
- 200.0 °C Thermal conductivity of 37.8 W/(m·K) -
- 300.0 °C Thermal conductivity of 37.2 W/(m·K) -
- 400.0 °C Thermal conductivity of 35.7 W/(m·K) -
- 500.0 °C Thermal conductivity of 34 W/(m·K) -
- 600.0 °C Thermal conductivity of 32 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 9.4 mm²/s -
- 100.0 °C Thermal diffusivity of 9.4 mm²/s -
- 200.0 °C Thermal diffusivity of 9.2 mm²/s -
- 300.0 °C Thermal diffusivity of 8.5 mm²/s -
- 400.0 °C Thermal diffusivity of 7.6 mm²/s -
- 500.0 °C Thermal diffusivity of 6.6 mm²/s -
- 600.0 °C Thermal diffusivity of 5.4 mm²/s -

EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT) chemical

Property Value
Carbon Carbon of 0.26 - 0.34 %
Chromium Chromium of 2.3 - 2.7 %
Manganese Manganese of 0.4 - 0.7 %
Molybdenum Molybdenum of 0.15 - 0.25 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.035 %
Vanadium Vanadium of 0.1 - 0.2 %

EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 3.09E-7 Ω·m
- 100.0 °C Electrical resistivity of 3.54E-7 Ω·m
- 200.0 °C Electrical resistivity of 4.18E-7 Ω·m
- 300.0 °C Electrical resistivity of 5.05E-7 Ω·m
- 400.0 °C Electrical resistivity of 6.09E-7 Ω·m
- 500.0 °C Electrical resistivity of 7.27E-7 Ω·m
- 600.0 °C Electrical resistivity of 8.67E-7 Ω·m

EN 10297-1 Grade 30CrMoV9 quenched and tempered (+QT) mechanical

Property Temperature Value Comment
Elastic modulus -100.0 °C Elastic modulus of 217 GPa -
- 20.0 °C Elastic modulus of 212 GPa -
- 100.0 °C Elastic modulus of 207 GPa -
- 200.0 °C Elastic modulus of 199 GPa -
- 300.0 °C Elastic modulus of 192 GPa -
- 400.0 °C Elastic modulus of 184 GPa -
- 500.0 °C Elastic modulus of 175 GPa -
- 600.0 °C Elastic modulus of 164 GPa -
Elongation 20.0 °C Elongation of 9 - 11 % -
Elongation, transverse 20.0 °C Elongation, transverse of 7 - 9 % -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Chromium Molybdenum Steel
Reduction of area 20.0 °C Reduction of area of 35 - 45 % -
Reduction of area, transverse 20.0 °C Reduction of area, transverse of 35 - 45 % -
Tensile strength 20.0 °C Tensile strength of 1000 - 1450 MPa -
Tensile strength, transverse 20.0 °C Tensile strength, transverse of 1000 - 1450 MPa -
Yield strength 20.0 °C Yield strength of 800 - 1050 MPa -
Yield strength, transverse 20.0 °C Yield strength, transverse of 800 - 1050 MPa -

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