EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+C)
EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+C) introduction
Steel 20NiCrMoS-2 is suitable for parts in vehicle and machine engineering, that are wear loaded at mean core strength, high ductility and fatigue resistance (e.g. gear wheels, shafts, axles). The show an enhanced workability. Lowest application temperature -60°C, most favorable application area up to 60 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 20NiCrMoS2, DIN 20NiCrMoS20, ASTM A108 Grade 8620, SAE 8620, UNS G86200, ASTM A108 Grade 8620H, SAE 8620H, UNS H86200, ASTM A108 Grade 8720, SAE 8720, UNS G87200, DIN 1.6526, DIN 21NiCrMoS2, AFNOR 20NiCrMoS2-2, BS 20NiCrMoS2-2, UNI 20NiCrMoS2-2, AISI 8620H, AISI 8720, EN 21NiCrMoS2, EN 1.6526, ISO 20NiCrMoS2-2, ASTM 8720
EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+C) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.84 - 7.85 g/cm³ |
EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+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 1.1E-5 - 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 -60 - 0 °C |
- |
| 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 460 - 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 44 - 46.3 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 47.1 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 46.2 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 44.1 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 41.3 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 38.6 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 35.9 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 12.8 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 12.1 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 11.1 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 10 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 8.8 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.4 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 4.7 mm²/s |
- |
EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+C) chemical
| Property |
Value |
| Carbon |
Carbon of 0.17 - 0.23 % |
| Chromium |
Chromium of 0.35 - 0.7 % |
| Manganese |
Manganese of 0.65 - 0.95 % |
| Molybdenum |
Molybdenum of 0.15 - 0.25 % |
| Nickel |
Nickel of 0.4 - 0.7 % |
| Phosphorus |
Phosphorus of 0.03 - 0.04 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.02 - 0.04 % |
EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+C) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 1.6E-7 - 2.25E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.72E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.42E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4.26E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.26E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.4E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.73E-7 Ω·m |
EN 10277-4 Grade 20NiCrMoS2-2 treated to ferritic-pearlite structure and hardness range and cold-drawn (+FP+C) mechanical
| Property |
Temperature |
Value |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
| - |
20.0 °C |
Elastic modulus of 205 - 212.78 GPa |
| - |
100.0 °C |
Elastic modulus of 207 GPa |
| - |
200.0 °C |
Elastic modulus of 188 - 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 149 - 240 [-] |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.29 [-] |
| Shear modulus |
20.0 °C |
Shear modulus of 79 - 82.8 GPa |
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