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Description

Korea KS STS309S KS standard austenite stainless steel bars(KS D3706-1992) and STS309S Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: STS309S
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy STS309S KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS302
STS303
STS303Se
STS304
STS304L
STS304N1
STS304N2
STS304LN
STS304J3
STS305

Chemical composition(mass fraction)(wt.%) of the STS309S

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.08 Max 1.00 Max 2.00 Max 0.045 Max 0.03 22.0-24.0 12.0-15.0

Mechanical Properties of steel grade STS309S

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)
641 (≥) 764 (≥) 21 44 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade STS309S

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 - -     0.22 -  
636 742 - 44.3 131   -  
534 - 24 33.2   333 131

Heat Treatment of steel grade STS309S

Heat treated : 1943°C - 1441°C

Technological Curves of steel grade STS309S

Cross Reference Table (Equivalent Grade) of STS309S

Grade Standard Country Application
STS309S KS Korea KS standard austenite stainless steel bars(KS D3706-1992)

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