300 series stainless steel, 309S stainless steel, 309S stainless steel knowledge

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11-May-2024

309S stainless steel equivalent material is 0Cr23Ni13 under Chinese standard and S30908 under American standard(AISI, ASTM). 309S is free cutting stainless steel containing sulfur, so 309S stainless steel is mainly used for the condition requiring free cutting and smooth surface DuDu high. 309S is low carbon content variations of 309 stainless steel and used for situation requiring welding. 309S stainless steel can withstand repeated heating under 980 ℃ and has high strength and oxidation resistance, high temperature carburizing performance.

309S stainless steel chemical composition:

Grade	C	Mn	P	S	Si	Cr	Ni
309S	0 0.08 max	2.00 max	0.045max	0.030 max	1.00max	22.0 - 24.0	12.0 - 15.0

309S stainless steel mechanical property:

Grade	SX 309S
	TYPICAL	MIN
Tensile Stength MPa	540	515
Proof Stress (0.2% Offset) MPa	280	205
Elongation (Percent in 50 mm)	54	40
Hardness (Brinell)	159
Endurance (fatigue) limit MPa	260

KUNFENG STEEL can offer 309S stainless steel. We registers hundreds of thousands of tons of 309S stainless steel ex-stock source on our spot trade flatform. If required, we can also offer chemical analysis, mechanical properties and other detailed information. If you are interested in 309S stainless steel, please contract KUNFENG STEEL.

Tags:ASTM A240 309S Austenitic Stainless Steel, ASTM A240 410 Martensitic Stainless Steel, 410S stainless steel