EN 10277-5 Grade 34CrMo4 cold drawn or turned and soft annealed
EN 10277-5 Grade 34CrMo4 cold drawn or turned and soft annealed introduction
Steel 34 CrMo 4 is suitable for parts of high strength and ductility requirements at mean and higher heat-treatment sections
(also heavy forged parts) in vehicle manufacturing, engine and machine engineering (e.g. shafts, wheel gears, steering knuckles). The steel shows a high specific mechanical resistance to static and dynamic load. Lowest application temp. -40 °C.
Equivalent material: NBN 34CrMo4, GB 35CrMo, AFNOR 34CD4, BS 708M32, GOST 35ChM, ISO 34CrMo4, UNI 35CrMo4, JIS SCM435, PN 35HM, SS 2234, UNE F.1250-35CrMo4, ASTM 4137, DIN 1.7220, AFNOR 35CD4, BS 708A37, UNE 34CrMo4, AISI 4137, AISI 4135, AISI 4135H, AISI 4137H, SAE 4137, SAE 4135, SAE 4135H, SAE 4137H, JIS SCCRM3, JIS STH22, JIS SCM3H, JIS SCCrM3, JIS SCM435H, JIS SCM435TK, JIS SCM435M, JIS SCM432, JIS SCM430M, EN 34CrMo4, EN 1.7220, GOST 34ChM, GB ML30CrMo, ASTM 4135H, ASTM 4135, ASTM Grade L72, ASTM Grade L7B, UNS G41350, UNS G41370, UNS H41350, UNS H41370
EN 10277-5 Grade 34CrMo4 cold drawn or turned and soft annealed general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.81 g/cm³ |
EN 10277-5 Grade 34CrMo4 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 - 0 °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 39.6 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 41.6 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 41.8 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 40.3 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 38.2 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 36 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 33.6 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 11 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 10.8 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 10.1 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.2 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.1 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 5.7 mm²/s |
- |
EN 10277-5 Grade 34CrMo4 cold drawn or turned and soft annealed chemical
| Property |
Value |
| Carbon |
Carbon of 0.3 - 0.37 % |
| 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 34CrMo4 cold drawn or turned and soft annealed electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.63E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 3.08E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.78E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.66E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.69E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.87E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 8.26E-7 Ω·m |
EN 10277-5 Grade 34CrMo4 cold drawn or turned and soft annealed mechanical
| Property |
Temperature |
Value |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
| - |
20.0 °C |
Elastic modulus of 210.27 - 212 GPa |
| - |
100.0 °C |
Elastic modulus of 205.17 - 207 GPa |
| - |
200.0 °C |
Elastic modulus of 198.68 - 199 GPa |
| - |
300.0 °C |
Elastic modulus of 191.11 - 192 GPa |
| - |
400.0 °C |
Elastic modulus of 182.31 - 184 GPa |
| - |
500.0 °C |
Elastic modulus of 171.64 - 175 GPa |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
| Hardness, Brinell |
20.0 °C |
Hardness, Brinell of 223 [-] |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.28 [-] |
| - |
100.0 °C |
Poisson's ratio of 0.29 [-] |
| - |
200.0 °C |
Poisson's ratio of 0.3 [-] |
| - |
300.0 °C |
Poisson's ratio of 0.3 [-] |
| - |
400.0 °C |
Poisson's ratio of 0.3 [-] |
| - |
500.0 °C |
Poisson's ratio of 0.31 [-] |
| Shear modulus |
20.0 °C |
Shear modulus of 81.88 GPa |
| - |
100.0 °C |
Shear modulus of 79.57 GPa |
| - |
200.0 °C |
Shear modulus of 76.63 GPa |
| - |
300.0 °C |
Shear modulus of 73.54 GPa |
| - |
400.0 °C |
Shear modulus of 69.99 GPa |
| - |
500.0 °C |
Shear modulus of 65.66 GPa |
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