ASTM A959:2011 201LN: Austenitic stainless steel type 201LN (UNS S20153) with the composition limits of ASTM A959-11. Carbon up to 0.03% and chromium 16.0-17.5%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Cr
Cu
Mn
N
Ni
P
S
Si
<=0.03
16.0-17.5
<=1.00
6.4-7.5
0.10-0.25
4.0-5.0
<=0.045
<=0.015
<=1.00
More data from ASTM A959:2011
From the standard
Other composition limitsfrom Table 1 and its footnotes
UNS number
S20153
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
201LN (common type number, not a trademark, widely used; not associated with any one product)
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)
Cu 1.00
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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