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L390QO/X56QO

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China SY/T L390QO/X56QO 海底管道用大口径无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L390QO/X56QO / L390QO/X56QO
Category Grade Standard Region/Area Standard Content
Metals L390QO/X56QO SY/T 7044 China 海底管道用大口径无缝钢管

Chemical composition(mass fraction)(wt.%) of the L390QO/X56QO

Element Min Max Similar
B - 0.0005 -
Mo - 0.5000 -
Cr - 0.5000 -
Ni - 0.5000 -
Cu - 0.5000 -
Nb+V+Ti - 0.1200 -
Pcm - 0.2400 -
CE - 0.4000 -
Ti - 0.0400 -
Nb - 0.0400 -
V - 0.0700 -
S - 0.0050 -
P - 0.0150 -
Mn - 1.6500 -
Si - 0.4500 -
C - 0.1600 -

Mechanical Properties of steel grade L390QO/X56QO

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)
698 (≥) 277 (≥) 23 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade L390QO/X56QO

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
14 - -     0.32 -  
441 583 - 41.3 314   -  
464 - 22 41.2   134 332

Heat Treatment of steel grade L390QO/X56QO

Heat treated : 1366°C - 1335°C

Technological Curves of steel grade L390QO/X56QO

Cross Reference Table (Equivalent Grade) of L390QO/X56QO

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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Jiangyou Longhai Special Steel Co.,Ltd.

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