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PSL2 Grade L290QO

Japan JIS PSL2GradeL290QO Title Petroleum and natural gas industries-Steel pipe for pipeline transportation systems and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals PSL2 Grade L290QO JIS G3476 Japan Title Petroleum and natural gas industries-Steel pipe for pipeline transportation systems

Chemical composition(mass fraction)(wt.%) of the PSL2 Grade L290QO

Element Min Max Similar
CEV - 0.3400 -
Nb - 0.0400 -
N - 0.0120 -
Al - 0.0600 -
B - 0.0005 -
Ti - 0.0400 -
V - 0.0400 -
Cu - 0.3500 -
Mo - 0.1000 -
Cr - 0.3000 -
Ni - 0.3000 -
Si - 0.4000 -
S - 0.0100 -
P - 0.0200 -
Mn - 1.3500 -
C - 0.1400 -
CE Pcm - 0.1900 -

Mechanical Properties of steel grade PSL2 Grade L290QO

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)
917 (≥) 778 (≥) 23 21 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade PSL2 Grade L290QO

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
33 - -     0.34 -  
439 642 - 24.3 331   -  
192 - 41 13.2   121 243

Heat Treatment of steel grade PSL2 Grade L290QO

Heat treated : 1178°C - 1847°C

Technological Curves of steel grade PSL2 Grade L290QO

Cross Reference Table (Equivalent Grade) of PSL2 Grade L290QO

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