EN 10217-3 Grade EStE 255 normalized or normalized formed (+N)
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) introduction
The fine grain steel EStE255 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 255 can be used in temperature range from -60 up to 400 degrees C.
Equivalent material: AFNOR TS34BT, ASTM 55, DIN 1.1103, EN 1.1103
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.85 g/cm³ |
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.08E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.19E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.25E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.3E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.36E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.41E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.45E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.49E-5 1/K |
- |
| Max service temperature |
- |
Max service temperature of 500 °C |
Typical for Carbon Steel |
| Max service temperature, long |
- |
Max service temperature, long of -60 - 400 °C |
- |
| Melting point |
- |
Melting point of 1480 - 1526 °C |
Typical for Low Carbon Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 423 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 461 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 479 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 499 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 517 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 536 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 558 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 587 J/(kg·K) |
- |
| Thermal conductivity |
-100.0 °C |
Thermal conductivity of 52.6 W/(m·K) |
- |
| - |
20.0 °C |
Thermal conductivity of 53.4 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 53.3 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 50.1 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 46.9 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 43.2 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 39.5 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 36.1 W/(m·K) |
- |
| Thermal diffusivity |
-100.0 °C |
Thermal diffusivity of 18 mm²/s |
- |
| - |
20.0 °C |
Thermal diffusivity of 14.8 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 13.7 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 12.1 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 10.6 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 9.2 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 7.6 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 6.1 mm²/s |
- |
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) chemical
| Property |
Value |
| Aluminium |
Aluminium of 0.02 % |
| Carbon |
Carbon of 0.16 % |
| Chromium |
Chromium of 0.3 % |
| Copper |
Copper of 0.2 % |
| Manganese |
Manganese of 0.5 - 1.3 % |
| Molybdenum |
Molybdenum of 0.08 % |
| Nickel |
Nickel of 0.3 % |
| Niobium |
Niobium of 0.03 % |
| Nitrogen |
Nitrogen of 0.02 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.015 % |
| Vanadium |
Vanadium of 0.05 % |
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) magnetic
| Property |
Value |
Comment |
| Curie temperature |
Curie temperature of 770 °C |
Typical for Low Carbon Steel |
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
-100.0 °C |
Electrical resistivity of 1.3E-7 Ω·m |
| - |
20.0 °C |
Electrical resistivity of 1.95E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 2.4E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 3.15E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 4E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 5.03E-7 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 6.26E-7 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 7.68E-7 Ω·m |
EN 10217-3 Grade EStE 255 normalized or normalized formed (+N) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 217 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 212 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 199 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 192 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 184 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 175 GPa |
- |
| - |
600.0 °C |
Elastic modulus of 164 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 25 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 23 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.29 [-] |
Typical for Low Carbon Steel |
| Shear modulus |
23.0 °C |
Shear modulus of 82 GPa |
Typical for Low Carbon Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 360 - 480 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 360 - 480 MPa |
- |
| Yield strength |
20.0 °C |
Yield strength of 245 - 255 MPa |
- |
| Yield strength, transverse |
20.0 °C |
Yield strength, transverse of 245 - 255 MPa |
- |
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