SUS309S (309S)
SUS309S Austenitic Stainless Steel
309S
S30908Characteristics of SUS309S:
SUS309S is a kind of high alloy austenitic stainless steel and local corrosion resistant stainless steel. Its high contents of chromium and nickel provide SUS309S comparable corrosion resistance, superior oxidation resistance. The carbon content of SUS309S is low. The strength of SUS309S is relatively good as well. It is suitable for the components where its working temperature is above 1000℃. It is typically used for elevated temperature applications.Chemical composition of SUS309S (%):
C
Mn
Ni
Cr
Si
P
S
≤0.08
≤2.00
12.00~15.00
22.00~24.00
≤1.00
≤0.045
≤0.030
Mechanical properties of SUS309S:
Tensile strength σb (MPa)
≥520
Yield strength σ0.2 (MPa)
≥205
Elongation δ5 (%)
≥40
Reduction of area ψ (%)
≥60
Hardness (HB)
≤187
Heat treatment of SUS309S:
The temperature of solid solution is 1030~1150℃. Cool rapidly.Applications of SUS309S:
SUS309S is a type of sulfur containing free cutting stainless steel. Accordingly, it is mainly used in the situations where good free cutting performance and high surface finish are required. SUS309S can be used to fabricate all kinds of heat resistant components working under the temperature of 850~1050℃, such as furnace holders, conveyor belts, annealing furnace covers, thermal cracking tubes and so on.For further information on selection, application, heat treatment and inventory, please contact us kindly. Your inquiries about our austenitic stainless steel and other stainless steel are highly appreciated.
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