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ASTM A959:2011 442 Steel: Specifications & Listings

ASTM A959:2011 442: Ferritic stainless steel type 442 (UNS S44200) with the composition limits of ASTM A959-11. Carbon up to 0.20% and chromium 18.0-23.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 442
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 A240/A240M S44200 ASTM A240/A240M:2025 USA No activity yet
BS 970 EN61 BS 970:1955 UK No activity yet
IS 1570 (Part 5) X07Cr17 IS 1570 (Part 5):1985 India No activity yet
BS 970 EN60 BS 970:1955 UK No activity yet
JIS G4304 SUS430 JIS G4304:2021 Japan No activity yet
ASTM A240/A240M S43000 ASTM A240/A240M:2025 USA No activity yet
ASTM A959 443 ASTM A959:2011 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A240/A240M S44200 ASTM A240/A240M:2025 Strong Match
ASTM A959 443 ASTM A959:2011 Strong Match
BS 970 EN61 BS 970:1955 Strong Match
ASTM A959 430Ti ASTM A959:2011 Strong Match
IS 1570 (Part 5) X07Cr17 IS 1570 (Part 5):1985 Strong Match
IS 6911 X07Cr17 IS 6911:1992 Strong Match
BS 970 EN60 BS 970:1955 Strong Match
JIS G4304 SUS430 JIS G4304:2021 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
<=0.20 18.0-23.0 <=1.00 <=0.60 <=0.040 <=0.040 <=1.00

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S44200
Metallurgical class
Ferritic grade: body-centered cubic, little or no tempered martensite, hardenable only slightly by cold working
Type
442 (common type number, not a trademark, widely used; not associated with any one product)
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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