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USA UNS J31550 Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service and J31550 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: J31550
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy J31550 UNS USA Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service
LC3
LC4
LC9
CA6NM
J02504
J03003
J02505
J12522
J22500
J42215

Chemical composition(mass fraction)(wt.%) of the J31550

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.15 0.6 0.50-0.80 0.04 0.045 3.00-4.00

Mechanical Properties of steel grade J31550

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)
292 (≥) 471 (≥) 22 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade J31550

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
43 - -     0.33 -  
438 952 - 11.3 444   -  
686 - 24 12.2   221 231

Heat Treatment of steel grade J31550

Heat treated : 1517°C - 1214°C

Technological Curves of steel grade J31550

Cross Reference Table (Equivalent Grade) of J31550

Grade Standard Country Application
UNS J31550 AISI USA
J31550 UNS USA Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service
J31550 UNS USA Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service

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