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ASTM A240/A240M:2025 S21400 Steel: Specifications & Listings

ASTM A240/A240M:2025 S21400: S21400 (type XM-31): austenitic (chromium-nickel or chromium-manganese-nickel) stainless steel plate, sheet and strip (UNS S21400). Specified in ASTM A240/A240M:2025.

Category: Stainless Steel
Grade Details
GradeASTM A240/A240M:2025 S21400
Standard ASTM A240/A240M:2025
ApplicationsPressure vessels and general applications (plate, sheet and strip)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
ASTM A959 XM-31 ASTM A959:2011 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 XM-31 ASTM A959:2011 Strong Match
ASTM A959 XM-28 ASTM A959:2011 Close Alternative
ASTM A276/A276M S24100 ASTM A276/A276M:2017 Close Alternative
IS 6603 X13Mn13Cr18N IS 6603:2024 Close Alternative
EN 10088-1 X13CrMnNiN18-13-2 EN 10088-1:2014 Close Alternative
EN 10088-1 X13CrMnNiN18-13-2 EN 10088-1:2023 Close Alternative
EN 10088-3 X13MnNiN18-13-2 EN 10088-3:2014 Close Alternative
ASTM A959 SS304 ASTM A959:2011 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 Mn P S Si Cr Ni N
<=0.12 14.00-16.00 <=0.045 <=0.030 0.30-1.00 17.0-18.5 <=1.00 >=0.35

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