A803 26-3-3 S44660 - ASTM A803/A803M-2016(R2021)

Grade	A803 26-3-3
USA UNS	S44660
Corresponding Standard	ASTM A803/A803M-2016(R2021) Standard Specification for Seamless and Welded Ferritic Stainless Steel Feedwater Heater Tubes
Classification	Ferritic Stainless Steel

A803 26-3-3 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N	More
Minimum Value	-	-	-	-	-	25	1	3	-	Ti+Nb = 6×(C+N) but no less than 020 min; 1.00 max
Maximum Value	0.03	1	1	0.04	0.03	28	3.5	4	0.04	Ti+Nb = 6×(C+N) but no less than 020 min; 1.00 max

A803 26-3-3 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥585	≥450	≥20	≤265

Approximate Comparison Table Ferritic Stainless Steel

United States	International Organization for Standardization		European Standard
UNS	ISO	Numerical Grade	Numerical Grade
S44660	X2CrMoNi27-4-2	4750-446-60-U	(1.4750)

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