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Description

Japan JIS SUS431FB martensitic stainless steel and SUS431FB Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: SUS431FB
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel SUS431FB JIS Japan martensitic stainless steel
SUS321FB
SUS321HFB
SUS347FB
SUS347HFB
SUS329J1FB
SUS403FB
SUS410FB
SUS410J1FB
SUS420J1FB
SUS420J2FB

Chemical composition(mass fraction)(wt.%) of the SUS431FB

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.20 Max 1.00 Max 1.00 Max 0.040 Max 0.030 15.0-17.0 1.25-2.50

Mechanical Properties of steel grade SUS431FB

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)
745 (≥) 323 (≥) 22 12 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade SUS431FB

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 - -     0.42 -  
866 631 - 24.3 413   -  
646 - 31 24.2   423 314

Heat Treatment of steel grade SUS431FB

Heat treated : 1944°C - 1269°C

Technological Curves of steel grade SUS431FB

Cross Reference Table (Equivalent Grade) of SUS431FB

Grade Standard Country Application
SUS431FB JIS Japan martensitic stainless steel

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