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ASTM A959:2011 308 Steel: Specifications & Listings

ASTM A959:2011 308: Austenitic stainless steel type 308 (UNS S30800) with the composition limits of ASTM A959-11. Carbon up to 0.08% and chromium 19.0-21.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 308
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
ASTM A276/A276M S30800 ASTM A276/A276M:2017 USA No activity yet
IS 11169 (Part 2) X04Cr19Ni10 IS 11169 (Part 2):1989 India No activity yet
IS 1570 (Part 5) X04Cr18Ni10Ti IS 1570 (Part 5):1985 India No activity yet
IS 1570 (Part 5) X04Cr18Ni10Nb IS 1570 (Part 5):1985 India No activity yet
BS 970 (Part 1) 321S31 BS 970 (Part 1):1991 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A276/A276M S30800 ASTM A276/A276M:2017 Strong Match
IS 11169 (Part 2) X04Cr19Ni10 IS 11169 (Part 2):1989 Strong Match
IS 1570 (Part 5) X04Cr18Ni10Ti IS 1570 (Part 5):1985 Strong Match
IS 1570 (Part 5) X04Cr18Ni10Nb IS 1570 (Part 5):1985 Strong Match
IS 11169 (Part 2) X04Cr18Ni10Ti IS 11169 (Part 2):1989 Strong Match
IS 6911 X04Cr18Ni10Ti IS 6911:1992 Strong Match
IS 6911 X04Cr18Ni10Nb IS 6911:1992 Strong Match
ASTM A959 347 ASTM A959:2011 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 19.0-21.0 <=2.00 10.0-12.0 <=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
S30800
Metallurgical class
Austenitic grade: usually predominantly face-centered cubic, hardenable only by cold working
Type
308 (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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