DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC)

DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC) introduction

19 MnCr 5 is a case hardening steel for anti-friction bearings. In the Jominy test it reaches surface hardnesses of approximately 49 HRC. It is used for anti-friction bearing parts that are subjected to medium stress.

Equivalent material: DIN 1.3523, AFNOR 19MnCr5, BS 19MnCr5, AISI 5120H, SAE 5120H, EN 19MnCr5, EN 1.3523, ASTM 5120H, UNS H51200

DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC) general

Property Temperature Value
Density 20.0 °C Density of 7.83 - 7.85 g/cm³

DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC) 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 -
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 41 W/(m·K) -
- 100.0 °C Thermal conductivity of 42.7 W/(m·K) -
- 200.0 °C Thermal conductivity of 42.8 W/(m·K) -
- 300.0 °C Thermal conductivity of 41.6 W/(m·K) -
- 400.0 °C Thermal conductivity of 39.9 W/(m·K) -
- 500.0 °C Thermal conductivity of 37.8 W/(m·K) -
- 600.0 °C Thermal conductivity of 35.6 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 11.4 mm²/s -
- 100.0 °C Thermal diffusivity of 11 mm²/s -
- 200.0 °C Thermal diffusivity of 10.3 mm²/s -
- 300.0 °C Thermal diffusivity of 9.5 mm²/s -
- 400.0 °C Thermal diffusivity of 8.5 mm²/s -
- 500.0 °C Thermal diffusivity of 7.3 mm²/s -
- 600.0 °C Thermal diffusivity of 6 mm²/s -

DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC) magnetic

Property Value
Carbon Carbon of 0.17 - 0.23 %
Chromium Chromium of 1 - 1.3 %
Copper Copper of 0.3 %
Manganese Manganese of 1.1 - 1.4 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.4 %
Sulfur Sulfur of 0.035 %

DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 2.54E-7 Ω·m
- 100.0 °C Electrical resistivity of 3E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.69E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.51E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.45E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.54E-7 Ω·m
- 600.0 °C Electrical resistivity of 7.78E-7 Ω·m

DIN 17230 Grade 19MnCr5 annealed to achieve spheroidized carbides (+AC) mechanical

Property Temperature Value Comment
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 -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Chromium Steel

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