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ASTM A959:2011 420 Steel: Specifications & Listings

ASTM A959:2011 420: Martensitic stainless steel type 420 (UNS S42000) with the composition limits of ASTM A959-11. Carbon >=0.15% and chromium 12.0-14.0%.

Category: Stainless Steel
Grade Details
GradeASTM A959:2011 420
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 5) X66Cr13 IS 1570 (Part 5):1985 India No activity yet
ASTM A276/A276M S42000 ASTM A276/A276M:2017 USA No activity yet
EN 10088-3 X15Cr13 EN 10088-3:2014 Europe No activity yet
EN 10088-1 X15Cr13 EN 10088-1:2014 Europe (CEN) No activity yet
IS 6603 X20Cr13 IS 6603:2024 India No activity yet
IS 6603 X30Cr13 IS 6603:2024 India No activity yet
EN 10088-3 X20Cr13 EN 10088-3:2014 Europe No activity yet
ASTM A276/A276M S41000 ASTM A276/A276M:2017 USA No activity yet
EN 10088-1 X20Cr13 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X30Cr13 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X39Cr13 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X46Cr13 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-1 X65Cr13 EN 10088-1:2023 Europe (CEN) No activity yet
EN 10088-3 X30Cr13 EN 10088-3:2014 Europe No activity yet
EN 10088-3 X39Cr13 EN 10088-3:2014 Europe No activity yet
EN 10088-3 X46Cr13 EN 10088-3:2014 Europe No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A276/A276M S42000 ASTM A276/A276M:2017 Strong Match
EN 10088-3 X15Cr13 EN 10088-3:2014 Strong Match
EN 10088-1 X15Cr13 EN 10088-1:2014 Strong Match
EN 10088-1 X15Cr13 EN 10088-1:2023 Strong Match
EN 10088-2 X15Cr13 EN 10088-2:2014 Strong Match
IS 6603 X20Cr13 IS 6603:2024 Strong Match
IS 6603 X30Cr13 IS 6603:2024 Strong Match
EN 10088-3 X20Cr13 EN 10088-3:2014 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 P S Si
>=0.15 12.0-14.0 <=1.00 <=0.040 <=0.030 <=1.00

More data from ASTM A959:2011

From the standard
Other composition limits from Table 1 and its footnotes
UNS number
S42000
Metallurgical class
Martensitic grade: can be hardened by heat treating and quenching and then tempered; delivered annealed or hardened and tempered
Type
420 (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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