309S Stainless Steel

Yield Strength /MPa: ≥ 205
Tensile Strength /MPa: ≥515
Elongation /%: ≥ 40
Reduction of Area /%: ≥50
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Product Details

309S is a free cutting stainless steel containing sulfur, which is mainly used for occasions requiring high degree of free cutting and surface smoothness.

309S Equivalent to GB 0Cr23Ni13, and American standard S30908 (AISI, ASTM).

309S is a variant of low carbon 309 stainless steel, used in welding applications. The lower carbon content minimizes the amount of carbide precipitated in the heat-affected zone near the weld seams, which may lead to intergranular corrosion (weld erosion) of stainless steel in some environments.


Features:

Can withstand repeated heating below 980 ℃, with high temperature strength and oxidation resistance, anti - carburizing performance.


Application: furnace material:

Widely used in boilers, energy (nuclear power, thermal power, fuel cells), industrial furnaces, incinerators, heating furnaces, chemical, petrochemical and other important fields.


309S Chemical Composition:

C ≤ 0.08

Mn ≤ 2.00

Si ≤ 1.00

P ≤ 0.045

S ≤ 0.030

Ni ≤ 12.0-15.0

Cr ≤ 22.0-24.0


Mechanical Properties:

Yield Strength /MPa≥ 205

Tensile Strength /MPa≥515

Elongation /%≥ 40

Reduction of Area /%≥50


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