EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C)
EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C) introduction
Steel 20MnCrS5 is compared to 20 MnCr 5 suitable for parts of higher dimension in vehicle and machine engineering at higher core strength and enhanced workability (gears, joint parts, gear wheels, bolts). Lowest application temperature -25°C, most favorable application area up to 80 mm nominal size.
As a bright steel product it is used in the form of bars, bright, straight, in various conditions (see DIN EN 10277 : 1999-10).
Equivalent material: ISO 20MnCrS5, DIN 20MnCrS5, ASTM A108 Grade 4820, SAE 4820, UNS G48200, DIN 1.7149, DIN 16MnCr5E, AFNOR 20MC5, UNI 20MnCr5, AISI 5120, AISI 4820, SAE 5120, JIS SMnC420H, EN 16MnCr5E, EN 1.7149
EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.85 g/cm³ |
EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C) 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 -25 - 0 °C |
- |
| Melting point |
- |
Melting point of 1382 - 1529 °C |
Typical for Chromium 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 45.9 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 46.4 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 45.6 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 43.5 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 40.9 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 38.2 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 35.5 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 12.7 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 12 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 11 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 9.9 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.7 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.3 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 6 mm²/s |
- |
EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C) chemical
| Property |
Value |
| Carbon |
Carbon of 0.17 - 0.22 % |
| Chromium |
Chromium of 1 - 1.3 % |
| Manganese |
Manganese of 1.1 - 1.4 % |
| Phosphorus |
Phosphorus of 0.03 - 0.04 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.02 - 0.04 % |
EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 2.27E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.76E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.46E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.31E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.32E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.48E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.81E-7 Ω·m |
EN 10277-4 Grade 20MnCrS5 soft annealed and cold drawn (+A+C) mechanical
| Property |
Temperature |
Value |
| 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 250 - 270 [-] |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.28 [-] |
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