309S stainless steel

The 309S is a free cutting stainless steel containing sulfur for use where free cutting and surface finish are required.

The Chinese grade of 309S is 0Cr23Ni13. The characteristics and application of American standard S30908 (American AISI, ASTM) are better than 0Cr19Ni9 in corrosion resistance and heat resistance.

The 309S is a variant of the lower carbon 309 stainless steel for use where welding is required. The lower carbon content minimizes the carbide precipitation in the heat-affected zone near the weld, which may result in intercrystalline corrosion (welding erosion) of stainless steel in some environments.

It can withstand repeated heating below 980 ℃, with high temperature strength, oxidation resistance and carburizing resistance. Widely used in boiler, energy (nuclear power, thermal power, fuel cell), industrial furnace, incinerator, heating furnace, chemical industry, petrochemical and other important fields.

309S stainless steel 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

309S stainless steel Mechanical properties:
Yield strength /MPa: ≥ 205
Tensile strength /MPa: ≥515
Elongation /% : ≥ 40
Reduction rate of section /% : ≥50

If you need 309S stainless steel, please contact us!