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ASTM A959:2011 S40800 Steel: Specifications & Listings

ASTM A959:2011 S40800: Ferritic stainless steel grade (UNS S40800) with the composition limits of ASTM A959-11. Carbon up to 0.08% and chromium 11.5-13.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 S40800
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 X04Cr12 IS 6603:2024 India No activity yet
ASTM A240/A240M S41008 ASTM A240/A240M:2025 USA No activity yet
JIS G4304 SUS410S JIS G4304:2021 Japan No activity yet
JIS G4304 SUS410 JIS G4304:2021 Japan No activity yet
BS 970 (Part 1) 403S17 BS 970 (Part 1):1991 UK No activity yet
ASTM A240/A240M S40300 ASTM A240/A240M:2025 USA No activity yet
ASTM A240/A240M S40500 ASTM A240/A240M:2025 USA No activity yet
IS 6603 X12Cr13 IS 6603:2024 India No activity yet
EN 10088-3 X12Cr13 EN 10088-3:2014 Europe No activity yet
JIS G4304 SUS405 JIS G4304:2021 Japan No activity yet
JIS G4304 SUS403 JIS G4304:2021 Japan No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
IS 6603 X04Cr12 IS 6603:2024 Strong Match
ASTM A240/A240M S41008 ASTM A240/A240M:2025 Strong Match
JIS G4304 SUS410S JIS G4304:2021 Strong Match
JIS G4305 SUS410S JIS G4305:2012 Strong Match
JIS G4304 SUS410 JIS G4304:2021 Strong Match
JIS G4305 SUS410 JIS G4305:2012 Strong Match
BS 970 (Part 1) 403S17 BS 970 (Part 1):1991 Strong Match
BS 970 (Part 3) 403S17 BS 970 (Part 3):1991 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
<=0.08 11.5-13.0 <=1.00 <=0.80 <=0.045 <=0.045 <=1.00

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S40800
Metallurgical class
Ferritic grade: body-centered cubic, little or no tempered martensite, hardenable only slightly 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)
Ti 12xC-1.10
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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