EN 10217-3: Grade EStE 420 Steel – Normalized / Normalized Formed (+N) – Technical Specifications
The fine grain steel EStE 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. EStE 420 can be used in temperature range from -20 up to 400 degrees C.
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 | 0.3 [-] | Typical for Steel |
Tensile strength | 20.0 °C | 530 - 680 MPa | |
Tensile strength, transverse | 20.0 °C | 530 - 680 MPa | |
Yield strength | 20.0 °C | 400 - 420 MPa | |
Yield strength, transverse | 20.0 °C | 400 - 420 MPa | |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.05E-5 1/K |
20.0 °C | 1.15E-5 1/K | |
100.0 °C | 1.21E-5 1/K | |
200.0 °C | 1.27E-5 1/K | |
300.0 °C | 1.32E-5 1/K | |
400.0 °C | 1.36E-5 1/K | |
500.0 °C | 1.4E-5 1/K | |
600.0 °C | 1.44E-5 1/K | |
Max service temperature, long | -20 - 400 °C | |
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 | |
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 | 0.015 % |
Titanium | 0.2 % |
Vanadium | 0.22 % |
Metal
- EN 10217-3 Grade EStE 460 – Normalized or Normalized Formed Steel Tubes (+N)
- EN 10217-3: Grade TStE 460 Normalized Steel Tubes for High-Pressure and Industrial Applications
- EN 10217-3 Grade WStE 420: Normalized or Normalized Formed Steel Tubes (+N)
- EN 10217-3: WStE 460 Normalized Steel Tube Grade for High-Performance Applications
- EN 10217-3 Grade StE 285 Steel Tubes – Normalized or Normalized Formed (N) for High-Pressure Applications
- EN 10217-3 Grade StE 420: Normalized and Normalized Formed Steel Tubes (+N)
- EN 10217-3 Grade TStE 420 – Normalized or Normalized Formed Steel Tubes (N)
- EN 10217-3 Grade EStE 255 – Normalized & +N Steel Tubes for Pressure Vessels
- EN 10217-3 Grade EStE 285 – Normalized or Normalized-Formed (N) Steel Tubes
- EN 10217-3 Grade EStE 355 – Normalized/Normalized Formed (+N) Steel Tubes for High‑Pressure Applications