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20-54-9 Grade 140

China SY/T 20-54-9Grade140 耐蚀合金套管和油管 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals 20-54-9 Grade 140 SY/T 6950 China 耐蚀合金套管和油管

Chemical composition(mass fraction)(wt.%) of the 20-54-9 Grade 140

Element Min Max Similar
Fe - - -
Mo - - 9.0000
Ni - - 54.0000
Cr - - 20.0000
C - - 0.0100

Mechanical Properties of steel grade 20-54-9 Grade 140

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)
159 (≥) 187 (≥) 31 22 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade 20-54-9 Grade 140

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
22 - -     0.31 -  
112 552 - 41.3 322   -  
278 - 33 13.2   131 242

Heat Treatment of steel grade 20-54-9 Grade 140

Heat treated : 1359°C - 1685°C

Technological Curves of steel grade 20-54-9 Grade 140

Cross Reference Table (Equivalent Grade) of 20-54-9 Grade 140

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