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25-7-3 Grade 65

China SY/T 25-7-3Grade65 耐蚀合金套管和油管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25-7-3Grade65 / 25-7-3 Grade 65
Category Grade Standard Region/Area Standard Content
Metals 25-7-3 Grade 65 SY/T 6950 China 耐蚀合金套管和油管

Chemical composition(mass fraction)(wt.%) of the 25-7-3 Grade 65

Element Min Max Similar
PRE 37.5000 - -
N - 0.1800 -
Mo - 3.0000 -
Ni - 7.0000 -
Cr - 25.0000 -
C - 0.0200 -

Mechanical Properties of steel grade 25-7-3 Grade 65

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)
561 (≥) 787 (≥) 12 14 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade 25-7-3 Grade 65

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
11 - -     0.13 -  
696 828 - 34.3 311   -  
726 - 21 24.2   331 113

Heat Treatment of steel grade 25-7-3 Grade 65

Heat treated : 1681°C - 1563°C

Technological Curves of steel grade 25-7-3 Grade 65

Cross Reference Table (Equivalent Grade) of 25-7-3 Grade 65

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