DIN 17125 Grade EStE 255 – Normalized / Normalized Formed (+N) Steel Tubes
The fine grained steel is used acc. DIN 17178 : 1986-5 for welded steel tubes and acc. DIN 17179 : 1986-5 as seamless steel tubes for special purposes from -60 to 400 degrees C. Application: pressure vessel construction, apparatus construction, pipelines, mechanical engineering, toolbuilding Special requirements regarding processing have to be arranged (e.g. coatings). For welded tubes the calculation with the 100 % loads are possible for the seam area.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | -100.0 °C | 217 GPa | |
20.0 °C | 212 GPa | ||
100.0 °C | 207 GPa | ||
200.0 °C | 199 GPa | ||
300.0 °C | 192 GPa | ||
400.0 °C | 184 GPa | ||
500.0 °C | 175 GPa | ||
600.0 °C | 164 GPa | ||
Elongation | 20.0 °C | 25 % | |
Elongation, transverse | 20.0 °C | 23 % | |
Poisson's ratio | 23.0 °C | 0.29 [-] | Typical for Low Carbon Steel |
Shear modulus | 23.0 °C | 82 GPa | Typical for Low Carbon Steel |
Tensile strength | 20.0 °C | 360 - 480 MPa | |
Tensile strength, transverse | 20.0 °C | 360 - 480 MPa | |
Yield strength | 20.0 °C | 225 - 255 MPa | |
Yield strength, transverse | 20.0 °C | 225 - 255 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.08E-5 1/K | |
20.0 °C | 1.19E-5 1/K | ||
100.0 °C | 1.25E-5 1/K | ||
200.0 °C | 1.3E-5 1/K | ||
300.0 °C | 1.36E-5 1/K | ||
400.0 °C | 1.41E-5 1/K | ||
500.0 °C | 1.45E-5 1/K | ||
600.0 °C | 1.49E-5 1/K | ||
Max service temperature | 500 °C | Typical for Carbon Steel | |
Max service temperature, long | -60 - 400 °C | ||
Melting point | 1480 - 1526 °C | Typical for Low Carbon Steel | |
Specific heat capacity | -100.0 °C | 423 J/(kg·K) | |
20.0 °C | 461 J/(kg·K) | ||
100.0 °C | 479 J/(kg·K) | ||
200.0 °C | 499 J/(kg·K) | ||
300.0 °C | 517 J/(kg·K) | ||
400.0 °C | 536 J/(kg·K) | ||
500.0 °C | 558 J/(kg·K) | ||
600.0 °C | 587 J/(kg·K) | ||
Thermal conductivity | -100.0 °C | 52.6 W/(m·K) | |
20.0 °C | 53.4 W/(m·K) | ||
100.0 °C | 53.3 W/(m·K) | ||
200.0 °C | 50.1 W/(m·K) | ||
300.0 °C | 46.9 W/(m·K) | ||
400.0 °C | 43.2 W/(m·K) | ||
500.0 °C | 39.5 W/(m·K) | ||
600.0 °C | 36.1 W/(m·K) | ||
Thermal diffusivity | -100.0 °C | 18 mm²/s | |
20.0 °C | 14.8 mm²/s | ||
100.0 °C | 13.7 mm²/s | ||
200.0 °C | 12.1 mm²/s | ||
300.0 °C | 10.6 mm²/s | ||
400.0 °C | 9.2 mm²/s | ||
500.0 °C | 7.6 mm²/s | ||
600.0 °C | 6.1 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | -100.0 °C | 1.3E-7 Ω·m |
20.0 °C | 1.95E-7 Ω·m | |
100.0 °C | 2.4E-7 Ω·m | |
200.0 °C | 3.15E-7 Ω·m | |
300.0 °C | 4E-7 Ω·m | |
400.0 °C | 5.03E-7 Ω·m | |
500.0 °C | 6.26E-7 Ω·m | |
600.0 °C | 7.68E-7 Ω·m | |
Magnetic
| Property | Value | Comment |
|---|---|---|
Curie temperature | 770 °C | Typical for Low Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.02 % |
Carbon | 0.16 % |
Chromium | 0.3 % |
Copper | 0.2 % |
Manganese | 0.5 - 1.3 % |
Molybdenum | 0.08 % |
Nickel | 0.3 % |
Niobium | 0.03 % |
Nitrogen | 0.02 % |
Phosphorus | 0.03 % |
Silicon | 0.4 % |
Sulfur | 0.015 % |
Metal
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