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L245NO/BNO

China SY/T L245NO/BNO 海底管道用大口径无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: L245NO/BNO / L245NO/BNO
Category Grade Standard Region/Area Standard Content
Metals L245NO/BNO SY/T 7044 China 海底管道用大口径无缝钢管

Chemical composition(mass fraction)(wt.%) of the L245NO/BNO

Element Min Max Similar
CEpcm - 0.2300 -
Cr - 0.3000 -
Mo - 0.3500 -
Ni - 0.5000 -
Cu - 0.3500 -
S - 0.0030 -
P - 0.0150 -
Mn - 1.3500 -
C - 0.1200 -
B - 0.0005 -
Mo - 0.1000 -
Cr - 0.3000 -
Ni - 0.3000 -
Cu - 0.3500 -
Pcm - 0.2200 -
CE - 0.3600 -
Ti - 0.0400 -
Nb+V+Ti - 0.1200 -
V+Nb - 0.0600 -
S - 0.0050 -
P - 0.0150 -
Mn - 1.3500 -
Si - 0.4000 -
C - 0.1400 -

Mechanical Properties of steel grade L245NO/BNO

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)
388 (≥) 292 (≥) 14 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade L245NO/BNO

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
34 - -     0.13 -  
622 525 - 43.3 434   -  
246 - 41 13.2   411 424

Heat Treatment of steel grade L245NO/BNO

Heat treated : 1238°C - 1126°C

Technological Curves of steel grade L245NO/BNO

Cross Reference Table (Equivalent Grade) of L245NO/BNO

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