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25-7-4 Grade 80

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China SY/T 25-7-4Grade80 耐蚀合金套管和油管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25-7-4Grade80 / 25-7-4 Grade 80
Category Grade Standard Region/Area Standard Content
Metals 25-7-4 Grade 80 SY/T 6950 China 耐蚀合金套管和油管

Chemical composition(mass fraction)(wt.%) of the 25-7-4 Grade 80

Element Min Max Similar
PRE 40.0000 - -
N - 0.2700 -
Mo - 4.0000 -
Ni - 7.0000 -
Cr - 25.0000 -
C - 0.0200 -

Mechanical Properties of steel grade 25-7-4 Grade 80

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)
782 (≥) 496 (≥) 13 42 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade 25-7-4 Grade 80

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
44 - -     0.34 -  
669 828 - 11.3 232   -  
776 - 11 11.2   414 211

Heat Treatment of steel grade 25-7-4 Grade 80

Heat treated : 1488°C - 1981°C

Technological Curves of steel grade 25-7-4 Grade 80

Cross Reference Table (Equivalent Grade) of 25-7-4 Grade 80

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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