DIN 1651 Grade 45S20 cold drawn

DIN 1651 Grade 45S20 cold drawn

DIN 1651 Grade 45S20 cold drawn introduction

The fully killed machining steel 45 S 20 is used for mass parts of higher strength, especially for lower toughness demands cross-sectional. It has advantages regarding a higher cutting speed.
Application in the automotive engineering, toolbuilding, apparatus engineering (screws, nuts, smal parts).

Equivalent material: AFNOR 45MF6.1, BS 216M44, ISO 45S20, JIS SUM42, PN A45, UNE F.2133-45S20, SAE 1146, DIN 1.0727, DIN 46S20, AFNOR 46S20, BS 46S20, AISI 1139, AISI 1146, SAE 1139, JIS 46S20, EN 46S20, EN 1.0727, ISO 46S20, GB Y45, GB/T U70452, GB/T Y45, UNS G11390, UNS G11460

DIN 1651 Grade 45S20 cold drawn general

Property Temperature Value
Density 20.0 °C Density of 7.8 - 7.85 g/cm³

DIN 1651 Grade 45S20 cold drawn thermal

Property Temperature Value Comment
Coefficient of thermal expansion -100.0 °C Coefficient of thermal expansion of 1.08E-5 1/K -
- 20.0 °C Coefficient of thermal expansion of 1.19E-5 1/K -
- 100.0 °C Coefficient of thermal expansion of 1.1E-5 - 1.25E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.18E-5 - 1.3E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.36E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.32E-5 - 1.41E-5 1/K -
- 500.0 °C Coefficient of thermal expansion of 1.45E-5 1/K -
- 600.0 °C Coefficient of thermal expansion of 1.49E-5 1/K -
Max service temperature - Max service temperature of 500 °C Typical for Carbon Steel
Melting point - Melting point of 1380 - 1514 °C Typical for Medium Carbon 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 - 490 J/(kg·K) -
- 200.0 °C Specific heat capacity of 499 - 530 J/(kg·K) -
- 300.0 °C Specific heat capacity of 517 J/(kg·K) -
- 400.0 °C Specific heat capacity of 536 - 600 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 41.7 - 49 W/(m·K) -
- 100.0 °C Thermal conductivity of 43.4 W/(m·K) -
- 200.0 °C Thermal conductivity of 43.2 W/(m·K) -
- 300.0 °C Thermal conductivity of 41.4 W/(m·K) -
- 400.0 °C Thermal conductivity of 39.1 W/(m·K) -
- 500.0 °C Thermal conductivity of 36.7 W/(m·K) -
- 600.0 °C Thermal conductivity of 34.1 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 11.6 mm²/s -
- 100.0 °C Thermal diffusivity of 11.3 mm²/s -
- 200.0 °C Thermal diffusivity of 10.5 mm²/s -
- 300.0 °C Thermal diffusivity of 9.5 mm²/s -
- 400.0 °C Thermal diffusivity of 8.3 mm²/s -
- 500.0 °C Thermal diffusivity of 7.1 mm²/s -
- 600.0 °C Thermal diffusivity of 5.8 mm²/s -

DIN 1651 Grade 45S20 cold drawn chemical

Property Value
Carbon Carbon of 0.42 - 0.5 %
Manganese Manganese of 0.7 - 1.1 %
Phosphorus Phosphorus of 0.06 %
Silicon Silicon of 0.1 - 0.3 %
Sulfur Sulfur of 0.18 - 0.25 %

DIN 1651 Grade 45S20 cold drawn electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 1.2E-7 - 2.5E-7 Ω·m
- 100.0 °C Electrical resistivity of 2.95E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.65E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.53E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.56E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.74E-7 Ω·m
- 600.0 °C Electrical resistivity of 8.13E-7 Ω·m

DIN 1651 Grade 45S20 cold drawn mechanical

Property Temperature Value
Elastic modulus -100.0 °C Elastic modulus of 217 GPa
- 20.0 °C Elastic modulus of 210 - 212 GPa
- 100.0 °C Elastic modulus of 207 GPa
- 200.0 °C Elastic modulus of 193 - 199 GPa
- 300.0 °C Elastic modulus of 185 - 192 GPa
- 400.0 °C Elastic modulus of 175 - 184 GPa
- 500.0 °C Elastic modulus of 175 GPa
- 600.0 °C Elastic modulus of 164 GPa
Elongation 20.0 °C Elongation of 5 - 9 %
Poisson's ratio 25.0 °C Poisson's ratio of 0.28 [-]
Shear modulus 20.0 °C Shear modulus of 81 GPa
Tensile strength 20.0 °C Tensile strength of 580 - 980 MPa
Yield strength 20.0 °C Yield strength of 305 - 570 MPa

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