DIN 1630 Grade St 37.4 hot worked, normalized

DIN 1630 Grade St 37.4 hot worked, normalized introduction

Seamless tubes made from St 37.4 are used in the apparatus engineering, container and pipe construction as well as mechanical engineering. Operating temperature max. 300 °C, the allowed pressure is unlimited.
The steel is weldable.

Equivalent material: JIS STS38-s, ASTM Grade I, EN P235TR2, DIN St35.4, DIN 1.0255, DIN St 37-4, AFNOR TU E 220, BS P235T2, JIS STS370, JIS STPY400, EN P235T2, EN 1.0255, ASTM Grade A

DIN 1630 Grade St 37.4 hot worked, normalized general

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

DIN 1630 Grade St 37.4 hot worked, normalized 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 1.25E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 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 1.41E-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, long - Max service temperature, long of 0 - 300 °C -
Melting point - Melting point of 1480 - 1526 °C Typical for Low 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 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 56.9 W/(m·K) -
- 100.0 °C Thermal conductivity of 56.4 W/(m·K) -
- 200.0 °C Thermal conductivity of 53.5 W/(m·K) -
- 300.0 °C Thermal conductivity of 49.4 W/(m·K) -
- 400.0 °C Thermal conductivity of 45.2 W/(m·K) -
- 500.0 °C Thermal conductivity of 41.3 W/(m·K) -
- 600.0 °C Thermal conductivity of 37.6 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 15.7 mm²/s -
- 100.0 °C Thermal diffusivity of 14.5 mm²/s -
- 200.0 °C Thermal diffusivity of 12.9 mm²/s -
- 300.0 °C Thermal diffusivity of 11.2 mm²/s -
- 400.0 °C Thermal diffusivity of 9.6 mm²/s -
- 500.0 °C Thermal diffusivity of 7.9 mm²/s -
- 600.0 °C Thermal diffusivity of 6.3 mm²/s -

DIN 1630 Grade St 37.4 hot worked, normalized chemical

Property Value
Aluminium Aluminium of 0.02 %
Carbon Carbon of 0.17 %
Manganese Manganese of 0.35 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.35 %
Sulfur Sulfur of 0.04 %

DIN 1630 Grade St 37.4 hot worked, normalized magnetic

Property Value Comment
Curie temperature Curie temperature of 770 °C Typical for Low Carbon Steel

DIN 1630 Grade St 37.4 hot worked, normalized electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 1.83E-7 Ω·m
- 100.0 °C Electrical resistivity of 2.27E-7 Ω·m
- 200.0 °C Electrical resistivity of 2.95E-7 Ω·m
- 300.0 °C Electrical resistivity of 3.8E-7 Ω·m
- 400.0 °C Electrical resistivity of 4.81E-7 Ω·m
- 500.0 °C Electrical resistivity of 5.99E-7 Ω·m
- 600.0 °C Electrical resistivity of 7.38E-7 Ω·m

DIN 1630 Grade St 37.4 hot worked, normalized 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
Elongation 20.0 °C Elongation of 25 %
Elongation, transverse 20.0 °C Elongation, transverse of 23 %
Poisson's ratio 20.0 °C Poisson's ratio of 0.28 [-]
Tensile strength 20.0 °C Tensile strength of 350 - 480 MPa
Tensile strength, transverse 20.0 °C Tensile strength, transverse of 350 - 480 MPa
Yield strength 20.0 °C Yield strength of 215 - 235 MPa
Yield strength Rp0.2 50.0 °C Yield strength Rp0.2 of 215 - 235 MPa
- 200.0 °C Yield strength Rp0.2 of 170 - 185 MPa
- 250.0 °C Yield strength Rp0.2 of 150 - 165 MPa
- 300.0 °C Yield strength Rp0.2 of 130 - 140 MPa
Yield strength, transverse 20.0 °C Yield strength, transverse of 215 - 235 MPa

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