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L690QO/X100QO

China SY/T L690QO/X100QO 海底管道用大口径无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L690QO/X100QO / L690QO/X100QO
Category Grade Standard Region/Area Standard Content
Metals L690QO/X100QO SY/T 7044 China 海底管道用大口径无缝钢管

Chemical composition(mass fraction)(wt.%) of the L690QO/X100QO

Element Min Max Similar
S - 0.0300 -
P - 0.0300 -
Cu - 0.2000 -
Ni - 0.3000 -
Cr - 0.2000 -
Mn 0.3500 0.6500 -
Si - 0.0300 -
C 0.1100 0.1800 -

Mechanical Properties of steel grade L690QO/X100QO

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)
584 (≥) 571 (≥) 13 12 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade L690QO/X100QO

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
43 - -     0.34 -  
122 744 - 43.3 112   -  
868 - 42 43.2   432 211

Heat Treatment of steel grade L690QO/X100QO

Heat treated : 1224°C - 1882°C

Technological Curves of steel grade L690QO/X100QO

Cross Reference Table (Equivalent Grade) of L690QO/X100QO

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