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ASTM A959:2011 S30430 Steel: Specifications & Listings

ASTM A959:2011 S30430: Austenitic stainless steel grade (UNS S30430) with the composition limits of ASTM A959-11. Carbon up to 0.03% and chromium 17.0-19.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 S30430
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 6603 X03Cr18Ni9Cu4 IS 6603:2024 India No activity yet
IS 11169 (Part 2) X02Cr18Ni9Cu3 IS 11169 (Part 2):2023 India No activity yet
EN 10088-3 X3CrNiCu18-9-4 EN 10088-3:2014 Europe No activity yet
IS 11169 (Part 2) X02Cr19Ni9 IS 11169 (Part 2):2023 India No activity yet
BS 970 (Part 1) 304S11 BS 970 (Part 1):1991 UK No activity yet
EN 10088-1 X3CrNiCu18-9-4 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-3 X2CrNi18-9 EN 10088-3:2014 Europe No activity yet
JIS G4304 SUS304LN JIS G4304:2021 Japan No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 6603 X03Cr18Ni9Cu4 IS 6603:2024 Strong Match
IS 11169 (Part 2) X02Cr18Ni9Cu3 IS 11169 (Part 2):2023 Strong Match
EN 10088-3 X3CrNiCu18-9-4 EN 10088-3:2014 Strong Match
IS 11169 (Part 2) X02Cr19Ni9 IS 11169 (Part 2):2023 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 1570 (Part 7) 3Cr18Ni11H IS 1570 (Part 7):1992 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 Cu Mn Ni P S Si
<=0.03 17.0-19.0 3.0-4.0 <=2.00 8.0-10.0 <=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
S30430
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
No type number is printed; the grade is identified by its UNS number only
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)
Cu 3.0-4.0
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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