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Chemical composition % of the ladle analysis of grade 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
KS standard austenite stainless steel bars(KS D3706-1992)
Mechanical properties of grade STS309S
Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
982 (≥) 341 (≥) 24 32 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 144
Physical properties of grade STS309S
Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
959 (≥) 597 (≥) 11 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 344
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
324 463 821
STS309S Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
STS309S
Stainless steel bars
STS309STP
Stainless lined steel pipe
STS309STPY
Large diameter welded stainless steel pipes
STS309STB
Stainless steel for boiler and heat exchanger tubes

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