ASTM A959:2011 XM-32: Martensitic stainless steel type XM-32 (UNS S64512) with the composition limits of ASTM A959-11. Carbon 0.08-0.15% and chromium 11.0-12.5%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Cr
Mn
Mo
N
Ni
P
S
Si
V
0.08-0.15
11.0-12.5
0.50-0.90
1.50-2.00
0.01-0.05
2.00-3.00
<=0.025
<=0.025
<=0.35
0.25-0.40
More data from ASTM A959:2011
From the standard
Other composition limitsfrom Table 1 and its footnotes
UNS number
S64512
Metallurgical class
Martensitic grade: can be hardened by heat treating and quenching and then tempered; delivered annealed or hardened and tempered
Type
XM-32 (numbering system developed and applied by ASTM)
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)
V 0.25-0.40
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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