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Description

Japan JIS G 4311 (2011), SUS 321 Specialsteel Heat-resisting steel bars and wire rods and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SUS 321
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SUS 321 Austenite JIS Japan Heat-resisting steel bars and wire rods

Chemical composition(mass fraction)(wt.%) of the SUS 321

C Si Mn P S Cr Ni Mo N Ti
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 17.00 -19.00 9.00 -13.00 ≤ ≥ ≤ ≥ 5×C% - ≥

Mechanical Properties of steel grade SUS 321

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)
592 (≥) 991 (≥) 32 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade SUS 321

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
11 - -     0.31 -  
499 169 - 21.3 344   -  
818 - 21 13.2   431 223

Heat Treatment of steel grade SUS 321

Heat treated : 1413°C - 1822°C

Technological Curves of steel grade SUS 321

Relevant standard of SUS 321

G 4311 (2011) Heat-resisting steel bars and wire rods G-4311-(2011).pdf

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