EN 10217-3 Grade StE 255 normalized or normalized formed (+N)

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Description

The fine grain steel StE255 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 255 can be used in temperature lows of up to -20 degrees C. The fine grain steel StE 255 is used for welded constructions of various kinds as well as for pressure vessels, stationary and mobile storage containers, high-pressure pipes, bridges and carrier constructions, etc. Its lowest temperature of employment is -20 degrees C.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
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.

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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

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20.0 °C

212 GPa

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100.0 °C

207 GPa

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200.0 °C

199 GPa

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300.0 °C

192 GPa

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400.0 °C

184 GPa

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500.0 °C

175 GPa

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600.0 °C

164 GPa

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Elongation

20.0 °C

25 %

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Elongation, transverse

20.0 °C

23 %

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for Low Carbon Steel

Shear modulus

23.0 °C

82 GPa

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Typical for Low Carbon Steel

Tensile strength

20.0 °C

360 - 480 MPa

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Tensile strength, transverse

20.0 °C

360 - 480 MPa

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Yield strength

20.0 °C

245 - 255 MPa

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Yield strength, transverse

20.0 °C

245 - 255 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

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20.0 °C

1.19E-5 1/K

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100.0 °C

1.25E-5 1/K

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200.0 °C

1.3E-5 1/K

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300.0 °C

1.36E-5 1/K

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400.0 °C

1.41E-5 1/K

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500.0 °C

1.45E-5 1/K

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600.0 °C

1.49E-5 1/K

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Max service temperature

500 °C

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Typical for Carbon Steel

Max service temperature, long

-20 - 0 °C

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Melting point

1480 - 1526 °C

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Typical for Low Carbon Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

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20.0 °C

461 J/(kg·K)

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100.0 °C

479 J/(kg·K)

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200.0 °C

499 J/(kg·K)

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300.0 °C

517 J/(kg·K)

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400.0 °C

536 J/(kg·K)

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500.0 °C

558 J/(kg·K)

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600.0 °C

587 J/(kg·K)

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Thermal conductivity

-100.0 °C

46.5 W/(m·K)

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20.0 °C

49.4 W/(m·K)

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100.0 °C

49.4 W/(m·K)

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200.0 °C

47.8 W/(m·K)

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300.0 °C

45.1 W/(m·K)

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400.0 °C

41.8 W/(m·K)

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500.0 °C

38.6 W/(m·K)

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600.0 °C

35.3 W/(m·K)

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Thermal diffusivity

-100.0 °C

15.9 mm²/s

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20.0 °C

13.7 mm²/s

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100.0 °C

12.7 mm²/s

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200.0 °C

11.5 mm²/s

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300.0 °C

10.2 mm²/s

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400.0 °C

8.9 mm²/s

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500.0 °C

7.4 mm²/s

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600.0 °C

5.8 mm²/s

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Electrical

PropertyTemperatureValue

Electrical resistivity

-100.0 °C

1.47E-7 Ω·m

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20.0 °C

2.11E-7 Ω·m

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100.0 °C

2.59E-7 Ω·m

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200.0 °C

3.3E-7 Ω·m

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300.0 °C

4.16E-7 Ω·m

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400.0 °C

5.2E-7 Ω·m

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500.0 °C

6.41E-7 Ω·m

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600.0 °C

7.85E-7 Ω·m

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Magnetic

PropertyValueComment

Curie temperature

770 °C

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Typical for Low Carbon Steel

Chemical properties

PropertyValue

Aluminium

0.02 %

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Carbon

0.18 %

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Chromium

0.3 %

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Copper

0.2 %

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Manganese

0.5 - 1.3 %

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Molybdenum

0.08 %

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Nickel

0.3 %

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Niobium

0.03 %

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Nitrogen

0.02 %

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Phosphorus

0.04 %

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Silicon

0.4 %

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Sulfur

0.03 %

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Vanadium

0.05 %

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