S21904 - ASTM A 666/A666M-2024

USA UNS	S21904
ASTM Specification or Grade	XM-11
Corresponding Standard	ASTM A666/A666M-2024 Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	N
Minimum Value	-	-	8	-	-	19	5.5	0.15
Maximum Value	0.04	0.75	10	0.06	0.03	21.5	7.5	0.4

Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
Sheet and Strip	Annealing	≥690	≥415	≥40
Plate	Annealing	≥620	≥345	≥45
/	1/4 Hard	≥895	≥795	≥15 (thickness≤0.76mm)

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