DIN 1651 Grade 35SPb20 cold drawn and stress relieved

DIN 1651 Grade 35SPb20 cold drawn and stress relieved introduction

The fully killed machining steel 35 SPb 20 is used for mass parts of mean strength, especially for lower toughness demands cross-sectional. Its better machinable because of the Pb addition.
Application in the automotive engineering, toolbuilding, apparatus engineering (screws, nuts, smal parts).

Equivalent material: DIN 1.0756, AFNOR 35SPb20, BS 35SPb20, EN 35SPb20, EN 1.0756, ISO 35SPb20

DIN 1651 Grade 35SPb20 cold drawn and stress relieved general

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

DIN 1651 Grade 35SPb20 cold drawn and stress relieved thermal

Property Temperature Value Comment
Coefficient of thermal expansion 100.0 °C Coefficient of thermal expansion of 1.1E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.18E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.32E-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 20.0 °C Specific heat capacity of 420 J/(kg·K) -
- 100.0 °C Specific heat capacity of 490 J/(kg·K) -
- 200.0 °C Specific heat capacity of 530 J/(kg·K) -
- 400.0 °C Specific heat capacity of 610 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 49 W/(m·K) -

DIN 1651 Grade 35SPb20 cold drawn and stress relieved chemical

Property Value
Carbon Carbon of 0.32 - 0.39 %
Lead Lead of 0.15 - 0.35 %
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 35SPb20 cold drawn and stress relieved electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 1.2E-7 Ω·m

DIN 1651 Grade 35SPb20 cold drawn and stress relieved mechanical

Property Temperature Value Comment
Elastic modulus 20.0 °C Elastic modulus of 210 GPa -
- 200.0 °C Elastic modulus of 193 GPa -
- 300.0 °C Elastic modulus of 185 GPa -
- 400.0 °C Elastic modulus of 175 GPa -
Poisson's ratio 23.0 °C Poisson's ratio of 0.29 [-] Typical for Medium Carbon Steel
Shear modulus 20.0 °C Shear modulus of 81 GPa -
Tensile strength 20.0 °C Tensile strength of 680 MPa -

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