DIN 17125 Grade TStE 420 (N) – High‑Performance Steel Tubes for Pressure Vessels & Pipelines
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 -50 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 | 7.84 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 | 21 % | |
Elongation, transverse | 20.0 °C | 19 % | |
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 | 500 - 650 MPa | |
Tensile strength, transverse | 20.0 °C | 500 - 650 MPa | |
Yield strength | 20.0 °C | 355 - 420 MPa | |
Yield strength, transverse | 20.0 °C | 355 - 420 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.05E-5 - 1.08E-5 1/K | |
20.0 °C | 1.15E-5 - 1.19E-5 1/K | ||
100.0 °C | 1.21E-5 - 1.25E-5 1/K | ||
200.0 °C | 1.27E-5 - 1.3E-5 1/K | ||
300.0 °C | 1.32E-5 - 1.36E-5 1/K | ||
400.0 °C | 1.36E-5 - 1.41E-5 1/K | ||
500.0 °C | 1.4E-5 - 1.45E-5 1/K | ||
600.0 °C | 1.44E-5 - 1.49E-5 1/K | ||
Max service temperature | 500 °C | Typical for Carbon Steel | |
Max service temperature, long | -50 - 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 | 35.4 W/(m·K) | |
20.0 °C | 40.4 W/(m·K) | ||
100.0 °C | 42 W/(m·K) | ||
200.0 °C | 42 W/(m·K) | ||
300.0 °C | 40.8 W/(m·K) | ||
400.0 °C | 38.9 W/(m·K) | ||
500.0 °C | 36.6 W/(m·K) | ||
600.0 °C | 34.3 W/(m·K) | ||
Thermal diffusivity | -100.0 °C | 12.1 mm²/s | |
20.0 °C | 11.2 mm²/s | ||
100.0 °C | 10.8 mm²/s | ||
200.0 °C | 10.1 mm²/s | ||
300.0 °C | 9.3 mm²/s | ||
400.0 °C | 8.3 mm²/s | ||
500.0 °C | 7 mm²/s | ||
600.0 °C | 5.8 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | -100.0 °C | 1.93E-7 Ω·m |
20.0 °C | 2.58E-7 Ω·m | |
100.0 °C | 3.05E-7 Ω·m | |
200.0 °C | 3.76E-7 Ω·m | |
300.0 °C | 4.6E-7 Ω·m | |
400.0 °C | 5.59E-7 Ω·m | |
500.0 °C | 6.75E-7 Ω·m | |
600.0 °C | 8.08E-7 Ω·m | |
Magnetic
| Property | Value | Comment |
|---|---|---|
Curie temperature | 770 °C | Typical for Low Carbon Steel |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.02 % |
Carbon | 0.2 % |
Chromium | 0.3 % |
Copper | 0.2 % |
Manganese | 1 - 1.7 % |
Molybdenum | 0.1 % |
Nickel | 1 % |
Nitrogen | 0.02 % |
Phosphorus | 0.03 % |
Silicon | 0.1 - 0.6 % |
Sulfur | 0.025 % |
Titanium | 0.2 % |
Vanadium | 0.22 % |
Metal
- DIN 17125 Grade EStE 420 Steel – Normalized or Normalized Formed (+N)
- DIN 17125 Grade EStE 460 – Premium Normalized Steel Tubes (+N)
- DIN 17125 Grade TStE 460 – Normalized or Normalized‑Formed Steel for High‑Temperature Applications
- DIN 17179 WStE 420 Steel Tubes – Normalized/Normalized Formed Grade for High-Performance Applications
- DIN 17125 StE 420 Steel: Normalized or Formed for Low-Temperature Tubes
- DIN 17125 Grade TStE 355 – Normalized or Normalized Formed Steel Tubes (+N)
- DIN 17125 Grade EStE 255 – Normalized / Normalized Formed (+N) Steel Tubes
- DIN 17125 Grade StE 460 – Normalized or Normalized Formed Steel
- DIN 17125 TStE 285 Normalized Steel Tubes (+N) – Ideal for Pressure Vessels & Pipelines
- DIN 17125 TStE 255 Steel – Normalized & Normalized Formed (N)