EN 10217-3 Grade StE 420 normalized or normalized formed (+N)

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Description

The fine grain steel StE 420 is used for special requirements according to DIN 17178 : 1986-5 for welded steel tubes and according to DIN 17179 : 1986-5 for seamless steel tubes. These steel tubes are used above all in pressure vessel construction, apparatus construction, pipe construction, as well as in general machine and equipment construction. The corresponding rules in the procedure manuals have to be complied with, for example Technische Regeln Druckbehälter (TRB) [Technical Rules for Pressure Vessels], Technische Regeln Dampfkessel (TRD) [Technical Rules for Steam Boilers], specifications sheets of the AG-Druckbehälter [Team for Pressure Vessels] (AD-specifications sheets), Technische Regeln brennbare Flüssigkeiten (TRbB) [Technical Rules for Flammable Liquids], Technische Regeln Druckgase (TRG) [Technical Rules for Pressure Gases], Technische Regeln Gashochdruckleitungen (TRGL) [Technical Rules for high-pressure Pipes for Gases]. Special requirements regarding further processing (for example zinc coating, chromium coating or enamelling) have to be negotiated at the time of ordering. For welded tubes, one can assume a 100% use of the allowed calculated stress of the welding seam. StE 420 can be used in temperature lows up to -20 degrees C.

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Properties

General

Density

ρ

7.84 g/cm³ at 20 °C

Mechanical

Elastic modulus

E

217 GPa at -100 °C

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Elongation

A

21 % at 20 °C

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Elongation, transverse

A

19 % at 20 °C

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Poisson's ratio

ν

0.29 [-] at 23 °C

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Typical for Low Carbon Steel

Shear modulus

G

82 GPa at 23 °C

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Typical for Low Carbon Steel

Tensile strength

Rm

530 - 680 MPa at 20 °C

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Tensile strength, transverse

Rm,trans

530 - 680 MPa at 20 °C

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Yield strength

YS

400 - 420 MPa at 20 °C

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Yield strength, transverse

YStrans

400 - 420 MPa at 20 °C

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Thermal

Coefficient of thermal expansion

α

1.05E-5 1/K at -100 °C

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Max service temperature

Tmax

500 °C

Typical for Carbon Steel

Max service temperature, long

Tmaxlong

-20 - 0 °C

Melting point

Tm

1480 - 1526 °C

Typical for Low Carbon Steel

Specific heat capacity

cp

423 J/(kg·K) at -100 °C

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Thermal conductivity

λ

35.4 W/(m·K) at -100 °C

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Thermal diffusivity

αdiff

12.1 mm²/s at -100 °C

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Electrical

Electrical resistivity

ρel

1.93E-7 Ω·m at -100 °C

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Magnetic

Curie temperature

Tc

770 °C

Typical for Low Carbon Steel

Chemical properties

Element

Weight %

Comment

Mn

1 - 1.7 %

Ni

1 %

Cr

0.3 %

V

0.22 %

C

0.2 %

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This material data has been provided by WIAM.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.