309S Stainless Steel Coil

309S austenitic stainless steel is mainly used in high temperature environment. Its high chromium content and nickel content ensure good corrosion resistance and oxidation resistance. Compared with austenite 304 alloy, it has a slightly higher strength at room temperature.

Detailed introduction

Chemical composition and Mechanical property

Grade	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Cr(%)	Ni(%)	N(%)	Cu(%)
309S	≤0.08	≤1.0	≤2.0	≤0.045	≤0.03	22.0-24.0	12.0-15.0	---	---

Grade	Tensile strengthMpa	Yield StrengthMpa	Elongation(%)	rate of reduction in area(%)	Density(g/cm3)
309S	≥515	≥205	≥40	≥50	7.98

Available for 309S grade

Type	Thickness	Width	Finish	Standard	Origin
Cold rolled(2B)	0.8mm-3.0mm	1000mm 1219mm 1500mm	2B / No.4 / HL / BA / Mirror etc	GB/ASTM/JIS/DIN/KS etc	TISCO / ZPSS etc
Hot rolled(No.1)	3.0mm-80.0mm	1219mm 1500mm 2000mm	No.1/No.4/HL/Mirror etc	GB/ASTM/JIS/DIN/KS etc	TISCO / ZPSS etc

It is often used in high temperature environment. Its high chromium content and nickel content ensure good corrosion resistance and oxidation resistance, and its strength at room temperature is a little higher than that of austenite 304 alloy

Applications

High alloy stainless steel usually exhibits good high temperature strength, creep resistance and environmental corrosion resistance. Therefore, they are widely used in furnace parts of heat treatment industry, such as conveyor belts, drums, furnace heads, refractory pads, hangers and so on. These grades are also used in chemical processing industries to carry hot concentrated acids, ammonia water and disulfides. In the food processing industry, these grades are used in contact with thermoacetic acid and citric acid

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