S20910 - ASTM A479/A479M-2018

USA UNS	S20910
ASTM Specification or Grade	XM-19
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	Mo	N	V	Cb
Minimum Value	-	-	4	-	-	20.5	11.5	1.5	0.2	0.1	0.1
Maximum Value	0.06	1	6	0.045	0.03	23.5	13.5	3	0.4	0.3	0.3

◎ 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 %	Hardness HBW
All specifications	Annealing	≥690	≥380	in 2 in.[50 mm] or 4D ≥ 35	≥ 55 ①	≤293
d ≤ 50.8mm	Hot Rolling	≥930	≥725	in 2 in.[50 mm] or 4D ≥ 20	≥ 50 ①	-
50.8mm ＜d ≤ 76.2mm	Hot Rolling	≥795	≥515	in 2 in.[50 mm] or 4D ≥ 25	≥ 50 ①	-
76.2mm ＜d ≤ 203.2mm	Hot Rolling	≥690	≥415	in 2 in.[50 mm] or 4D ≥ 30	≥ 50 ①	-
d ≤ 38.1mm	Strain hardening	≥1000	≥860	in 2 in.[50 mm] or 4D ≥ 12	≥ 40 ①	-
38.1mm ＜d ≤ 57.2mm	Strain hardening	≥825	≥725	in 2 in.[50 mm] or 4D ≥ 15	≥ 45 ①	-

◎ d-diameter, t-thickness

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!