DIN 1628 Grade St 44.4 normalized or normalized formed (+N)

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) introduction

Welded steel tubes made from St 44.4 are used in the apparatus engineering, container and pipe construction as well as mechanical engineering.
Allowed max. operating temperature 300 °C.
The steel is weldable.

Equivalent material: DIN 1.0257, DIN St 44-4, AFNOR TU E 250, BS P275T2, JIS STS410, EN P275T2, EN 1.0257, ASTM Grade B

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) general

Property Temperature Value Comment
Density 23.0 °C Density of 7.8 - 7.9 g/cm³ Typical for Low Carbon Steel

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) 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 - Max service temperature of 500 °C Typical for Carbon Steel
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 53.4 W/(m·K) -
- 100.0 °C Thermal conductivity of 52.9 W/(m·K) -
- 200.0 °C Thermal conductivity of 50.3 W/(m·K) -
- 300.0 °C Thermal conductivity of 46.7 W/(m·K) -
- 400.0 °C Thermal conductivity of 43.3 W/(m·K) -
- 500.0 °C Thermal conductivity of 39.8 W/(m·K) -
- 600.0 °C Thermal conductivity of 36.7 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 14.8 mm²/s -
- 100.0 °C Thermal diffusivity of 13.6 mm²/s -
- 200.0 °C Thermal diffusivity of 12.1 mm²/s -
- 300.0 °C Thermal diffusivity of 10.6 mm²/s -
- 400.0 °C Thermal diffusivity of 9.2 mm²/s -
- 500.0 °C Thermal diffusivity of 7.7 mm²/s -
- 600.0 °C Thermal diffusivity of 6.2 mm²/s -

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) chemical

Property Value
Aluminium Aluminium of 0.02 %
Carbon Carbon of 0.2 %
Manganese Manganese of 0.4 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.35 %
Sulfur Sulfur of 0.04 %

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) magnetic

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

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 1.95E-7 Ω·m
- 100.0 °C Electrical resistivity of 2.42E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.14E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.02E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.02E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.21E-7 Ω·m
- 600.0 °C Electrical resistivity of 7.55E-7 Ω·m

DIN 1628 Grade St 44.4 normalized or normalized formed (+N) 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 -
Elongation 20.0 °C Elongation of 21 % -
Elongation, transverse 20.0 °C Elongation, transverse of 19 % -
Poisson's ratio 20.0 °C Poisson's ratio of 0.28 [-] -
Shear modulus 23.0 °C Shear modulus of 82 GPa Typical for Low Carbon Steel
Tensile strength 20.0 °C Tensile strength of 420 - 550 MPa -
Tensile strength, transverse 20.0 °C Tensile strength, transverse of 420 - 550 MPa -
Yield strength 20.0 °C Yield strength of 265 - 275 MPa -
Yield strength Rp0.2 50.0 °C Yield strength Rp0.2 of 255 - 275 MPa -
- 200.0 °C Yield strength Rp0.2 of 200 - 215 MPa -
- 250.0 °C Yield strength Rp0.2 of 180 - 195 MPa -
- 300.0 °C Yield strength Rp0.2 of 155 - 165 MPa -
Yield strength, transverse 20.0 °C Yield strength, transverse of 265 - 275 MPa -

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