Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
Al
C
Cb
Ce
Cr
Mn
Ni
P
S
Si
<=0.025
0.04-0.08
0.60-1.00
0.05-0.10
26.0-28.0
<=1.00
31.0-33.0
<=0.020
<=0.015
<=0.30
More data from ASTM A959:2011
From the standard
Other composition limitsfrom Table 1 and its footnotes
UNS number
S33228
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only 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)
Cb 0.60-1.00, Al 0.025, Ce 0.05-0.10
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
Active ASTM A959:2011 S33228 Listings on M-EX (For Sale)