S30909 - ASTM A479/A479M-2018

USA UNS	S30909
ASTM Specification or Grade	309H
Corresponding Standard	ASTM A479/A479M-2018 Standard Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
Classification	Austenitic Stainless Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	0.04	-	-	-	-	22	12
Maximum Value	0.1	1	2	0.045	0.03	24	15

◎ New designations established in accordance with Practice E527 and SAE J1086 published jointly by ASTM and SAE. See ASTM DS-56C, available from ASTM Headquarters.

Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
All specifications	Annealing	≥ 515 ①	≥205	in 2 in.[50 mm] or 4D ≥ 30	≥ 40 ②

◎ d-diameter, t-thickness

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