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ASTM A959:2011 310MoLN Steel: Specifications & Listings

ASTM A959:2011 310MoLN: Austenitic stainless steel type 310MoLN (UNS S31050) with the composition limits of ASTM A959-11. Carbon up to 0.030% and chromium 24.0-26.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 310MoLN
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
IS 6603 X01Cr25Ni22Mo2 IS 6603:2024 India No activity yet
EN 10088-1 X1CrNiMoN25-22-2 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-3 X1CrNiMoN25-22-2 EN 10088-3:2014 Europe No activity yet
ASTM A240/A240M S31050 ASTM A240/A240M:2025 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 6603 X01Cr25Ni22Mo2 IS 6603:2024 Strong Match
EN 10088-1 X1CrNiMoN25-22-2 EN 10088-1:2014 Strong Match
EN 10088-1 X1CrNiMoN25-22-2 EN 10088-1:2023 Strong Match
EN 10088-3 X1CrNiMoN25-22-2 EN 10088-3:2014 Strong Match
EN 10088-2 X1CrNiMoN25-22-2 EN 10088-2:2014 Strong Match
ASTM A240/A240M S31050 ASTM A240/A240M:2025 Strong Match
IS 1570 (Part 5) X02Cr17Ni12Mo2 IS 1570 (Part 5):1985 Related Material
IS 1570 (Part 7) 3Cr17Ni12Mo3H IS 1570 (Part 7):1992 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 Mo N Ni P S Si
<=0.030 24.0-26.0 <=2.00 2.00-3.00 0.10-0.16 21.0-23.0 <=0.030 <=0.015 <=0.40

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S31050
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
310MoLN (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
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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