EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed

EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed introduction

Steel 25 CrMo 4 is suitable for parts of high strength and ductility requirements and mean and higher heat-treatment sections in vehicle manufacturing, engine and machine engineering (e.g. crankshafts, steering knuckles, pinions). Lowest application temp. -40 °C.

Equivalent material: NBN 25CrMo4, GB 30CrMoA, AFNOR 25CD4, BS 708M25, GOST 30ChM, ISO 25CrMo4, UNI 25CrMo4, JIS SCM430, PN 25HM, SS 2225, UNE F.1251-30CrMo4, ASTM 4130, DIN 1.7214, AFNOR 25 CD 4 S, AFNOR 9160C083, AFNOR 9160/C 39, AFNOR 25CrMo4, BS FE-PL1502, BS 25CrMo4, AISI 4130, SAE 4130, EN 25CrMo4, EN 1.7214, UNS J24056, IS 26Cr4Mo2, DIN 1.7218, BS 1717CDS110, BS 708A25, UNI 25CrMo4(KB), UNE 55Cr3, AISI 4130H, SAE 4130H, JIS SM420, JIS SCM420, JIS SCCrM1A, JIS SCCrM1B, EN 1.7218, ASTM 4130H, UNS G41300, UNS H41300

EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed general

Property Temperature Value
Density 20.0 °C Density of 7.83 g/cm³

EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed 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 -
Max service temperature, long - Max service temperature, long of -40 - 200 °C -
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 41 W/(m·K) -
- 100.0 °C Thermal conductivity of 42.7 W/(m·K) -
- 200.0 °C Thermal conductivity of 42.8 W/(m·K) -
- 300.0 °C Thermal conductivity of 41.6 W/(m·K) -
- 400.0 °C Thermal conductivity of 39.9 W/(m·K) -
- 500.0 °C Thermal conductivity of 37.8 W/(m·K) -
- 600.0 °C Thermal conductivity of 35.6 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 11.4 mm²/s -
- 100.0 °C Thermal diffusivity of 11 mm²/s -
- 200.0 °C Thermal diffusivity of 10.3 mm²/s -
- 300.0 °C Thermal diffusivity of 9.5 mm²/s -
- 400.0 °C Thermal diffusivity of 8.5 mm²/s -
- 500.0 °C Thermal diffusivity of 7.3 mm²/s -
- 600.0 °C Thermal diffusivity of 6 mm²/s -

EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed chemical

Property Value
Carbon Carbon of 0.22 - 0.29 %
Chromium Chromium of 0.9 - 1.2 %
Manganese Manganese of 0.6 - 0.9 %
Molybdenum Molybdenum of 0.15 - 0.3 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.03 %

EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 2.54E-7 Ω·m
- 100.0 °C Electrical resistivity of 3E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.69E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.51E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.45E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.54E-7 Ω·m
- 600.0 °C Electrical resistivity of 7.78E-7 Ω·m

EN 10277-5 Grade 25CrMo4 cold drawn or turned and soft annealed 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 -
Hardness, Brinell 20.0 °C Hardness, Brinell of 212 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Chromium Molybdenum Steel

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