DIN 1652-3 Grade 20MnCr5 cold-drawn or peeled and treated to ferrite-pearlite structure
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DIN 1652-3 Grade 20MnCr5 cold-drawn or peeled and treated to ferrite-pearlite structure

DIN 1652-3 Grade 20MnCr5 cold-drawn or peeled and treated to ferrite-pearlite structure introduction

The steel 20 MnCr 5 in opposite to 16 MnCr 5 is used for larger parts with higher core strength and advantageous toughness properties in the vehicle and mechanical engineering (e.g. gears, shafts, steering parts).
The lowest application amounts to -25 °C, the best application up to 50 mm nominal size.
Der Stahl 20 MnCr 5 ist gegenüber dem 16 MnCr 5 geeignet für Teile größerer Abmessungen im Fahrzeug- und Maschinenbau bei höherer Kernfestigkeit und günstigen Zähigkeitseigenschaften (Getriebe, Gelenkteile, Zahnräder, Bolzen). Die niedrigste Einsatztemperatur liegt bei -25 grd C, der günstigste Einsatzbereich bis 80 mm Nennmaß.

Equivalent material: AFNOR 20MC5, GOST 18ChG, ISO 20MnCr5, UNI 20MnCr5, JIS SMnC420, PN 18HG, SS 2523-03, UNE F.1523-20MnCr5, ASTM 5120, DIN 1.7147, AFNOR 20MnCr5, BS 20MnCr5, AISI 5120H, AISI 4820, SAE 5120H, SAE 4820, JIS SMnC420H, JIS SMnC420RCH, JIS SMnCRCH, JIS 20MnCr5, JIS SMnC21H, EN 20MnCr5, EN 1.7147, GOST 18CHG, UNS H51200, UNS G48200

DIN 1652-3 Grade 20MnCr5 cold-drawn or peeled and treated to ferrite-pearlite structure general

Property Temperature Value
Density 20.0 °C Density of 7.85 g/cm³

DIN 1652-3 Grade 20MnCr5 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 -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 -

DIN 1652-3 Grade 20MnCr5 cold-drawn or peeled and treated to ferrite-pearlite structure 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 0.04 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.035 %

DIN 1652-3 Grade 20MnCr5 cold-drawn or peeled and treated to ferrite-pearlite structure 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

DIN 1652-3 Grade 20MnCr5 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 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 152 - 201 [-]
Poisson's ratio 20.0 °C Poisson's ratio of 0.28 [-]

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