309s Stainless Steel

309s Stainless Steel

309S is a kind of easy cutting stainless steel containing sulphur, mainly used for conditions that requires easy cutting and high surface finish. The corresponding Chinese grade of 309S is 0Cr23Ni13, American standard S30908(America AISI, ASTM) characteristics and usages: the corrosion...
Product description

309S is a kind of easy cutting stainless steel containing sulphur, mainly used for conditions that requires easy cutting and high surface finish.

 

The corresponding Chinese grade of 309S is 0Cr23Ni13, American standard S30908(America AISI, ASTM) characteristics and usages: the corrosion resistance and heat resistance are better than that of 0Cr19Ni9.

 

309s is the variety of low carbon content 309 stainless steel, used for conditions need welding. Low carbon content minimize the carbide precipitation in the hot effect area near the soldering seam. But the precipitation of carbide might cause the inter granular corrosion in certain environment(welding corrosion).

 

Characteristics

Can stand the repeated heating below 980℃. It has high temperature strength, oxidation resistance and carburizing resistance.

 

Usages: furnace material.

Widely used in important fields like boilers, energy (nuclear power, thermal power, fuel cells), industrial furnaces, incinerators, heating furnace, chemistry, petrifaction.

 

Chemical Composition(%)

309S stainless steel GB/T1220-1992

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 Property

Yield Strength/MPa: ≥ 205

Tensile Strength/MPa: ≥515

Elongation/%: ≥ 40

Reduction of Area/%: ≥50

 


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