S39274 - ASTM A789/A789M-2024

USA UNS	S39274
Corresponding Standard	ASTM A789/A789M-2024 Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
Classification	Duplex Stainless Steel
Properties	Corrosion Resistance

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	W
Minimum Value	-	-	-	-	-	24	6	0.2	2.5	0.24	1.5
Maximum Value	0.03	0.8	1	0.03	0.02	26	8	0.8	3.5	0.32	2.5

Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Tube	Solution treatment at 1050~1125°C, quick quenching using water or other methods	≥800	≥550	≥15	HBW: ≤310 HRC: ≤32 HV: ≤310*

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