DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure
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DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure

DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure introduction

The steel 21 NiCrMoS 2 is used for wear loaded parts in the vehicle and mechanical engineering with medium core strength, better machinability, high toughness and high fatigue strength (e.g. gears, shafts, axles).
The lowest application amounts to -60 °C, the best application up to 60 mm nominal size.

Equivalent material: ISO 20NiCrMoS2, DIN 20NiCrMoS2-2, DIN 1.6526, AFNOR 20NiCrMoS2-2, BS 20NiCrMoS2-2, UNI 20NiCrMoS2-2, AISI 8620H, AISI 8720, SAE 8620H, SAE 8720, EN 21NiCrMoS2, EN 20NiCrMoS2-2, EN 1.6526, ISO 20NiCrMoS2-2, ASTM 8720, UNS H86200, UNS G87200

DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure general

Property Temperature Value
Density 20.0 °C Density of 7.84 g/cm³

DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure 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 -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 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 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 -

DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure chemical

Property Value
Carbon Carbon of 0.17 - 0.23 %
Chromium Chromium of 0.4 - 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 0.04 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.02 - 0.035 %

DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 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

DIN 1652-3 Grade 21NiCrMoS2 cold-drawn or peeled and treated to ferrite-pearlite structure mechanical

Property Temperature Value
Elastic modulus -100.0 °C Elastic modulus of 217 GPa
- 20.0 °C Elastic modulus of 212 - 212.78 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 145 - 192 [-]
Poisson's ratio 20.0 °C Poisson's ratio of 0.29 [-]
Shear modulus 20.0 °C Shear modulus of 82.8 GPa

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