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Description

Japan JIS G 4303 (2012), SUS 440B Specialsteel Stainless steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SUS 440B
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SUS 440B Martensite JIS Japan Stainless steel bars

Chemical composition(mass fraction)(wt.%) of the SUS 440B

C Si Mn P S Cr Ni Mo N
0.75 -0.95 ≤1.00 ≤1.00 ≤0.04 ≤0.03 16.00 -18.00 ≤0.60 ≤0.75 ≤ ≥

Mechanical Properties of steel grade SUS 440B

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)
979 (≥) 448 (≥) 21 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade SUS 440B

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
21 - -     0.31 -  
462 816 - 24.3 311   -  
324 - 33 43.2   414 431

Heat Treatment of steel grade SUS 440B

Heat treated : 1275°C - 1274°C

Technological Curves of steel grade SUS 440B

Relevant standard of SUS 440B

G 4303 (2012) Stainless steel bars G-4303-(2012).pdf

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