EN 10208-2 Grade L245NB normalized or normalized formed (+N)
EN 10208-2 Grade L245NB normalized or normalized formed (+N) introduction
Steel L245NB is produced as seamless or welded pipe for flammable media in condition normalized or normalizing formed. Its yield stress is between 245 and 440 N/mm². The steel is weldable, its carbon equivalent CEV accounts for max. 0.42. To the welding seam (welding methods SAW, COW) applies a mandrel-diameter for the bending test of 3x nominal thickness of the pipe.
Pipes are available with interior and exterior coating.
Main fields of application are long-distance pipelines for flammable liquids (e.g. crude oil and natural gas products) as well as for compressed and liquefied flammable gases. Pipes acc. to DIN EN 10208-2 : 1996-08 also fulfil the conditions decisive for the consumption acc. to standards 5L, 5LX and 5LS of the American Petroleum Institute (API). When using these pipes has to be considered the Technical rule for flammable liquids (Technische Regel für brennbare FlüssigkeitenTRbF 301).
Equivalent material: AFNOR TSE250, BS 40A-40B-40C, ISO L24TMC, DIN StE270.7, ISO BNE, ISO L245NE, DIN StE240.7, DIN 1.0457, DIN StE 240.7, DIN L245NE, DIN BNE, AFNOR L245NE, AFNOR BNE, BS L245NE, BS BNE, EN L245NE, EN 1.0457, ASTM API 5L Grade B, ASTM Grade WPL6, UNS K03006, UNS K03008
EN 10208-2 Grade L245NB normalized or normalized formed (+N) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.85 g/cm³ |
EN 10208-2 Grade L245NB 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 |
| 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 10208-2 Grade L245NB normalized or normalized formed (+N) chemical
| Property |
Value |
| Aluminium |
Aluminium of 0.015 - 0.06 % |
| Carbon |
Carbon of 0.16 % |
| Chromium |
Chromium of 0.3 % |
| Copper |
Copper of 0.25 % |
| Manganese |
Manganese of 1.1 % |
| Molybdenum |
Molybdenum of 0.1 % |
| Nickel |
Nickel of 0.3 % |
| Nitrogen |
Nitrogen of 0.01 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.4 % |
| Sulfur |
Sulfur of 0.02 % |
EN 10208-2 Grade L245NB normalized or normalized formed (+N) magnetic
| Property |
Value |
Comment |
| Curie temperature |
Curie temperature of 770 °C |
Typical for Low Carbon Steel |
EN 10208-2 Grade L245NB 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 10208-2 Grade L245NB 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 24 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 22 % |
- |
| 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 415 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 415 MPa |
- |
| Yield strength Rp0.5 |
20.0 °C |
Yield strength Rp0.5 of 245 - 440 MPa |
- |
| Yield strength, transverse |
20.0 °C |
Yield strength, transverse of 245 - 440 MPa |
- |
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