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SA-638 Grade 662

America ASME SA-638Grade662 高温用沉淀硬化铁基超耐热不锈钢棒材、锻件和锻坯 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SA-638Grade662 / SA-638 Grade 662
Category Grade Standard Region/Area Standard Content
Metals SA-638 Grade 662 ASME SA-638/SA-638M America 高温用沉淀硬化铁基超耐热不锈钢棒材、锻件和锻坯

Chemical composition(mass fraction)(wt.%) of the SA-638 Grade 662

Element Min Max Similar
Ti 1.5500 2.0000 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Ni 24.0000 28.0000 -
Mo 2.5000 3.5000 -
Mn - 1.5000 -
Cu - 0.5000 -
Cr 12.0000 15.0000 -
C - 0.0800 -
B 0.0010 0.0100 -
Al - 0.3500 -

Mechanical Properties of steel grade SA-638 Grade 662

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)
358 (≥) 728 (≥) 11 34 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade SA-638 Grade 662

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
42 - -     0.43 -  
481 427 - 24.3 313   -  
495 - 42 22.2   432 341

Heat Treatment of steel grade SA-638 Grade 662

Heat treated : 1483°C - 1587°C

Technological Curves of steel grade SA-638 Grade 662

Cross Reference Table (Equivalent Grade) of SA-638 Grade 662

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