DIN 17103 Grade WStE420 normalized or normalized formed (+N)
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DIN 17103 Grade WStE420 normalized or normalized formed (+N)

DIN 17103 Grade WStE420 normalized or normalized formed (+N) introduction

The fine grained steel WStE 420 (high temperature grade) is used for welded constructions of different kind like pressure vessels, stationary or mobile storage tanks, high pressure lines, bridge and support constructions etc. The application temperature of the high temperature grade amounts to 400 °C.

Equivalent material: AFNOR E420FP1, ASTM Grade 60, DIN P420NH, DIN 1.8932, BS P420NH, EN P420NH, EN 1.8932, ISO PT550QL2, ASTM Grade LF6 Class 1

DIN 17103 Grade WStE420 normalized or normalized formed (+N) general

Property Temperature Value
Density 20.0 °C Density of 7.84 g/cm³

DIN 17103 Grade WStE420 normalized or normalized formed (+N) thermal

Property Temperature Value
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
Max service temperature, long - Max service temperature, long of 0 - 400 °C
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 -100.0 °C Thermal conductivity of 35.4 W/(m·K)
- 20.0 °C Thermal conductivity of 40.4 W/(m·K)
- 100.0 °C Thermal conductivity of 42 W/(m·K)
- 200.0 °C Thermal conductivity of 42 W/(m·K)
- 300.0 °C Thermal conductivity of 40.8 W/(m·K)
- 400.0 °C Thermal conductivity of 38.9 W/(m·K)
- 500.0 °C Thermal conductivity of 36.6 W/(m·K)
- 600.0 °C Thermal conductivity of 34.3 W/(m·K)
Thermal diffusivity -100.0 °C Thermal diffusivity of 12.1 mm²/s
- 20.0 °C Thermal diffusivity of 11.2 mm²/s
- 100.0 °C Thermal diffusivity of 10.8 mm²/s
- 200.0 °C Thermal diffusivity of 10.1 mm²/s
- 300.0 °C Thermal diffusivity of 9.3 mm²/s
- 400.0 °C Thermal diffusivity of 8.3 mm²/s
- 500.0 °C Thermal diffusivity of 7 mm²/s
- 600.0 °C Thermal diffusivity of 5.8 mm²/s

DIN 17103 Grade WStE420 normalized or normalized formed (+N) chemical

Property Value
Aluminium Aluminium of 0.02 %
Carbon Carbon of 0.2 %
Chromium Chromium of 0.3 %
Copper Copper of 0.2 %
Manganese Manganese of 1 - 1.7 %
Molybdenum Molybdenum of 0.1 %
Nickel Nickel of 1 %
Niobium Niobium of 0.05 %
Nitrogen Nitrogen of 0.02 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 0.1 - 0.6 %
Sulfur Sulfur of 0.03 %
Vanadium Vanadium of 0.2 %

DIN 17103 Grade WStE420 normalized or normalized formed (+N) electrical

Property Temperature Value
Electrical resistivity -100.0 °C Electrical resistivity of 1.93E-7 Ω·m
- 20.0 °C Electrical resistivity of 2.58E-7 Ω·m
- 100.0 °C Electrical resistivity of 3.05E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.76E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.6E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.59E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.75E-7 Ω·m
- 600.0 °C Electrical resistivity of 8.08E-7 Ω·m

DIN 17103 Grade WStE420 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 19 % -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Steel
Tensile strength 20.0 °C Tensile strength of 490 - 680 MPa -
Yield strength 20.0 °C Yield strength of 345 - 420 MPa -
Yield strength Rp0.2 100.0 °C Yield strength Rp0.2 of 314 - 363 MPa -
- 150.0 °C Yield strength Rp0.2 of 294 - 343 MPa -
- 200.0 °C Yield strength Rp0.2 of 275 - 314 MPa -
- 250.0 °C Yield strength Rp0.2 of 245 - 284 MPa -
- 300.0 °C Yield strength Rp0.2 of 226 - 265 MPa -
- 350.0 °C Yield strength Rp0.2 of 196 - 235 MPa -
- 400.0 °C Yield strength Rp0.2 of 167 - 206 MPa -

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