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Germany DIN L555MB 易燃液体输送管线 - 钢管交货技术条件 - 第2部分:B级要求的管道 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L555MB / L 555 MB
Category Grade Standard Region/Area Standard Content
Metals L 555 MB DIN EN 10208-2 Germany 易燃液体输送管线 - 钢管交货技术条件 - 第2部分:B级要求的管道

Chemical composition(mass fraction)(wt.%) of the L 555 MB

Element Min Max Similar
CEV - - -
Other - - -
V+Nb+Ti - 0.1500 -
Al 0.0150 0.0600 -
V - 0.1000 -
Ti - 0.0600 -
Si - 0.4500 -
S - 0.0200 -
P -

Mechanical Properties of steel grade L 555 MB

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
745 (≥) 727 (≥) 44 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade L 555 MB

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
24 - -     0.43 -  
642 768 - 31.3 433   -  
268 - 31 22.2   443 244

Heat Treatment of steel grade L 555 MB

Heat treated : 1755°C - 1919°C

Technological Curves of steel grade L 555 MB

Cross Reference Table (Equivalent Grade) of L 555 MB

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