EN 10084 Grade 18CrNiMo7-6 quenched (+Q)

EN 10084 Grade 18CrNiMo7-6 quenched (+Q)

EN 10084 Grade 18CrNiMo7-6 quenched (+Q) introduction

Steel 18CrNiMo7-6 is suitable for highest loaded parts in vehicle manufacturing and machine engineering with high ductility and core strength demands (e.g. transmission parts, drive pinions).

Equivalent material: AS X4317H, GB 18Cr2Ni2MoH, EN 1.6587, ISO 18CrNiMo7-6, ASTM 18CrNiMo7-6, ASTM B30, SAE 4820, UNS G48200, DIN 17CrNiMo6, DIN 1.6587, DIN 18CrNiMo7-6, AFNOR 20MC5, BS 18CrNiMo7-6, UNE 14NiCrMo13, AISI 4820, JIS 18CrNiMo7-6

EN 10084 Grade 18CrNiMo7-6 quenched (+Q) general

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

EN 10084 Grade 18CrNiMo7-6 quenched (+Q) 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 Nickel 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 10084 Grade 18CrNiMo7-6 quenched (+Q) chemical

Property Value
Carbon Carbon of 0.15 - 0.21 %
Chromium Chromium of 1.5 - 1.8 %
Copper Copper of 0.4 %
Manganese Manganese of 0.5 - 0.9 %
Molybdenum Molybdenum of 0.25 - 0.35 %
Nickel Nickel of 1.4 - 1.7 %
Phosphorus Phosphorus of 0.03 %
Silicon Silicon of 0.15 - 0.4 %
Sulfur Sulfur of 0.035 %

EN 10084 Grade 18CrNiMo7-6 quenched (+Q) 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 10084 Grade 18CrNiMo7-6 quenched (+Q) 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 -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Nickel Chromium Molybdenum Steel
Tensile strength 20.0 °C Tensile strength of 800 - 1200 MPa -

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