ASTM A959:2011 S44535: Ferritic stainless steel grade (UNS S44535) with the composition limits of ASTM A959-11. Carbon up to 0.030% and chromium 20.0-24.0%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
Al
C
Cr
Cu
La
Mn
P
S
Si
Ti
<=0.50
<=0.030
20.0-24.0
<=0.50
0.04-0.20
0.30-0.80
<=0.050
<=0.020
<=0.50
0.03-0.20
More data from ASTM A959:2011
From the standard
Other composition limitsfrom Table 1 and its footnotes
UNS number
S44535
Metallurgical class
Ferritic grade: body-centered cubic, little or no tempered martensite, hardenable only slightly by cold working
Type
No type number is printed; the grade is identified by its UNS number only
Values
Maximum unless a range or minimum is shown; where two limits are shown for the same element in one grade the more stringent applies
Other elements (as printed)
La 0.04-0.20, Ti 0.03-0.20, Al 0.50
These are the recommended composition limits of the A959 guide, intended for adoption by standards for stainless steel products; they are not a product specification.
Source: ASTM A959:2011, Table 1 and its footnotes
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