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ASTM A959:2011 XM-19 Steel: Specifications & Listings

ASTM A959:2011 XM-19: Austenitic stainless steel type XM-19 (UNS S20910) with the composition limits of ASTM A959-11. Carbon up to 0.06% and chromium 20.5-23.5%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 XM-19
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 A276/A276M S20910 ASTM A276/A276M:2017 USA No activity yet
EN 10088-1 X5CrNiMnMoNNbV22-12-5-2 EN 10088-1:2023 Europe (CEN) No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A276/A276M S20910 ASTM A276/A276M:2017 Strong Match
EN 10088-1 X5CrNiMnMoNNbV22-12-5-2 EN 10088-1:2023 Strong Match
ASTM A240/A240M S20910 ASTM A240/A240M:2025 Strong Match
IS 6603 X04Cr17Ni12Mo2 IS 6603:2024 Related Material
JIS G4304 SUS316N JIS G4304:2021 Related Material
JIS G4305 SUS316N JIS G4305:2012 Related Material
ASTM A959 SS316 ASTM A959:2011 Related Material
IS 1570 (Part 5) X04Cr17Ni12Mo2 IS 1570 (Part 5):1985 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 Cb Cr Mn Mo N Ni P S Si V
<=0.06 0.10-0.30 20.5-23.5 4.0-6.0 1.50-3.00 0.20-0.40 11.5-13.5 <=0.045 <=0.030 <=1.00 0.10-0.30

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S20910
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
XM-19 (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)
Cb 0.10-0.30, V 0.10-0.30
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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