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ASTM A959:2011 304L Steel: Specifications & Listings

ASTM A959:2011 304L: Austenitic stainless steel type 304L (UNS S30403) with the composition limits of ASTM A959-11. Carbon up to 0.030% and chromium 17.5-19.5%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 304L
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 1570 (Part 7) 3Cr18Ni11H IS 1570 (Part 7):1992 India No activity yet
IS 1570 (Part 5) X02Cr19Ni10 IS 1570 (Part 5):1985 India No activity yet
ASTM A276/A276M S30403 ASTM A276/A276M:2017 USA No activity yet
BS 970 (Part 1) 304S11 BS 970 (Part 1):1991 UK No activity yet
ASTM A240/A240M S30453 ASTM A240/A240M:2025 USA No activity yet
ASTM A276/A276M S30454 ASTM A276/A276M:2017 USA No activity yet
IS 6603 X02Cr18Ni9N IS 6603:2024 India No activity yet
IS 6603 X02Cr19Ni11 IS 6603:2024 India No activity yet
EN 10088-1 X2CrNi18-9 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X2CrNiN18-10 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-3 X2CrNi18-9 EN 10088-3:2014 Europe No activity yet
EN 10088-3 X2CrNiN18-10 EN 10088-3:2014 Europe No activity yet
EN 10088-3 X2CrNi19-11 EN 10088-3:2014 Europe No activity yet
JIS G4304 SUS304L JIS G4304:2021 Japan No activity yet
JIS G4304 SUS304LN JIS G4304:2021 Japan No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 1570 (Part 5) X02Cr19Ni10 IS 1570 (Part 5):1985 Strong Match
IS 11169 (Part 2) X02Cr19Ni10 IS 11169 (Part 2):1989 Strong Match
IS 6911 X02Cr19Ni10 IS 6911:1992 Strong Match
ASTM A276/A276M S30403 ASTM A276/A276M:2017 Strong Match
BS 970 (Part 1) 304S11 BS 970 (Part 1):1991 Strong Match
BS 970 (Part 3) 304S11 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 304S11 BS 970 (Part 1):1983 Strong Match
IS 6603 X02Cr19Ni10 IS 6603:2024 Strong Match
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
<=0.030 17.5-19.5 <=2.00 8.0-12.0 <=0.045 <=0.030 <=1.00

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S30403
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
304L (designation originally assigned by the American Iron and Steel Institute)
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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