EN 10208-2 Grade L360MB thermomechanically rolled

EN 10208-2 Grade L360MB thermomechanically rolled introduction

Steel L369MB is produced as welded pipe for flammable media in condition thermomechanically rolled. Its yield stress is between 360 and 510 N/mm². The steel is weldable, its carbon equivalent CEV accounts for max. 0.41. To the welding seam (welding methods SAW, COW) applies a mandrel-diameter for the bending test of 4x 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: BS 50A-50B-50C, ISO L36TMC, DIN StE360.7TM, ISO X52ME, ISO L360ME, DIN 1.0578, DIN StE 360.7 T, DIN L360MB, DIN StE 360.7 TM, DIN L360ME, DIN X52ME, AFNOR L360ME, AFNOR X52ME, AFNOR L360MB, BS L360ME, BS X52ME, BS L360MB, EN 1.0578, GB/T F40, GB/T F36, GB/T FH36, GB/T FH40, GB/T L34907, GB/T L35107

EN 10208-2 Grade L360MB thermomechanically rolled general

Property Temperature Value
Density 20.0 °C Density of 7.83 g/cm³

EN 10208-2 Grade L360MB thermomechanically rolled 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 37.6 W/(m·K) -
- 20.0 °C Thermal conductivity of 42.2 W/(m·K) -
- 100.0 °C Thermal conductivity of 43.2 W/(m·K) -
- 200.0 °C Thermal conductivity of 42.9 W/(m·K) -
- 300.0 °C Thermal conductivity of 41.2 W/(m·K) -
- 400.0 °C Thermal conductivity of 39.1 W/(m·K) -
- 500.0 °C Thermal conductivity of 36.6 W/(m·K) -
- 600.0 °C Thermal conductivity of 34.1 W/(m·K) -
Thermal diffusivity -100.0 °C Thermal diffusivity of 12.9 mm²/s -
- 20.0 °C Thermal diffusivity of 11.7 mm²/s -
- 100.0 °C Thermal diffusivity of 11.2 mm²/s -
- 200.0 °C Thermal diffusivity of 10.3 mm²/s -
- 300.0 °C Thermal diffusivity of 9.4 mm²/s -
- 400.0 °C Thermal diffusivity of 8.3 mm²/s -
- 500.0 °C Thermal diffusivity of 7.1 mm²/s -
- 600.0 °C Thermal diffusivity of 5.7 mm²/s -

EN 10208-2 Grade L360MB thermomechanically rolled 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 1.6 %
Molybdenum Molybdenum of 0.1 %
Nickel Nickel of 0.3 %
Niobium Niobium of 0.05 %
Nitrogen Nitrogen of 0.01 %
Phosphorus Phosphorus of 0.03 %
Silicon Silicon of 0.45 %
Sulfur Sulfur of 0.02 %
Titanium Titanium of 0.04 %
Vanadium Vanadium of 0.05 %

EN 10208-2 Grade L360MB thermomechanically rolled magnetic

Property Value Comment
Curie temperature Curie temperature of 770 °C Typical for Low Carbon Steel

EN 10208-2 Grade L360MB thermomechanically rolled electrical

Property Temperature Value
Electrical resistivity -100.0 °C Electrical resistivity of 1.82E-7 Ω·m
- 20.0 °C Electrical resistivity of 2.47E-7 Ω·m
- 100.0 °C Electrical resistivity of 2.96E-7 Ω·m
- 200.0 °C Electrical resistivity of 3.68E-7 Ω·m
- 300.0 °C Electrical resistivity of 4.55E-7 Ω·m
- 400.0 °C Electrical resistivity of 5.56E-7 Ω·m
- 500.0 °C Electrical resistivity of 6.75E-7 Ω·m
- 600.0 °C Electrical resistivity of 8.13E-7 Ω·m

EN 10208-2 Grade L360MB thermomechanically rolled 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 22 % -
Elongation, transverse 20.0 °C Elongation, transverse of 20 % -
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 460 MPa -
Yield strength 20.0 °C Yield strength of 360 - 510 MPa -
Yield strength Rp0.5 20.0 °C Yield strength Rp0.5 of 360 - 510 MPa -

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