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China GB L485MB 石油天然气工业 输送钢管交货技术条件 第2部分:B级钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L485MB / L485MB
Category Grade Standard Region/Area Standard Content
Metals L485MB GB/T 9711.2 China 石油天然气工业 输送钢管交货技术条件 第2部分:B级钢管

Chemical composition(mass fraction)(wt.%) of the L485MB

Element Min Max Similar
S - 0.0200 -
P - 0.0250 -
Mn - 0.1700 -
C - 0.1600 -

Mechanical Properties of steel grade L485MB

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)
784 (≥) 834 (≥) 14 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade L485MB

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
21 - -     0.42 -  
836 215 - 11.3 342   -  
853 - 22 43.2   112 133

Heat Treatment of steel grade L485MB

Heat treated : 1975°C - 1359°C

Technological Curves of steel grade L485MB

Cross Reference Table (Equivalent Grade) of L485MB

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