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Description

Korea KS D 3691 (2001), STS321FB Specialsteel Stainless steel blooms and billets for forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STS321FB
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STS321FB Austenite KS Korea Stainless steel blooms and billets for forgings

Chemical composition(mass fraction)(wt.%) of the STS321FB

C Si Mn P S Cr Ni Mo N Ti
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.030 17.00 -19.00 9.00 -13.00 ≤ ≥ ≤ ≥ 5×C% - ≥

Mechanical Properties of steel grade STS321FB

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)
435 (≥) 321 (≥) 31 41 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade STS321FB

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
14 - -     0.44 -  
579 495 - 24.3 444   -  
354 - 42 34.2   444 124

Heat Treatment of steel grade STS321FB

Heat treated : 1646°C - 1581°C

Technological Curves of steel grade STS321FB

Cross Reference Table (Equivalent Grade) of STS321FB

Grade Standard Country Application
STS321
STS321

Relevant standard of STS321FB

D 3691 (2001) Stainless steel blooms and billets for forgings D-3691-(2001).pdf

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