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SUS 431 FB

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SUS 431 SUS 440A
#SUS-431

Description

Japan JIS G 4319 (1991), SUS 431 FB Specialsteel Stainless steel blooms and billets for forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SUS 431 FB
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SUS 431 FB Martensite JIS Japan Stainless steel blooms and billets for forgings

Chemical composition(mass fraction)(wt.%) of the SUS 431 FB

C Si Mn P S Cr Ni Mo N
≤0.20 ≤1.00 ≤1.00 ≤0.04 ≤0.03 15.00 -17.00 1.25 -2.50 ≤ ≥ ≤ ≥

Mechanical Properties of steel grade SUS 431 FB

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)
257 (≥) 695 (≥) 43 24 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade SUS 431 FB

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
23 - -     0.31 -  
142 637 - 31.3 332   -  
225 - 43 12.2   212 241

Heat Treatment of steel grade SUS 431 FB

Heat treated : 1354°C - 1336°C

Technological Curves of steel grade SUS 431 FB

Relevant standard of SUS 431 FB

G 4319 (1991) Stainless steel blooms and billets for forgings G-4319-(1991).pdf
SUS 431 SUS 440A
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