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ASTM A959:2011 XM-15 (S38100) Steel: Specifications & Listings

ASTM A959:2011 XM-15 (S38100): Austenitic stainless steel type XM-15 (UNS S38100) with the composition limits of ASTM A959-11. Carbon up to 0.08% and chromium 17.0-19.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 XM-15 (S38100)
Standard ASTM A959:2011
ApplicationsWrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
ASTM A240/A240M S38100 ASTM A240/A240M:2025 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A240/A240M S38100 ASTM A240/A240M:2025 Strong Match
ASTM A959 SS304 ASTM A959:2011 Related Material
ASTM A959 SS310 ASTM A959:2011 Related Material
EN 10088-1 X5CrNi18-10 EN 10088-1:2014 Related Material
EN 10088-1 X8CrNi25-21 EN 10088-1:2014 Related Material
KS D3566 STS304 KS D3566:2021 Related Material
SAE 30304 SAE J405 Related Material
UNI 6900 X5CrNi1810 UNI 6900:1971 Related Material
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 Ni P S Si
<=0.08 17.0-19.0 <=2.00 17.5-18.5 <=0.030 <=0.030 1.50-2.50

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S38100
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
XM-15 (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
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. Type XM-15 is printed for both S30310 and S38100; the UNS number is added to the name.
Source: ASTM A959:2011, Table 1 and its footnotes

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