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ASTM A240/A240M:2025 S31260 Steel: Specifications & Listings

ASTM A240/A240M:2025 S31260: S31260: duplex (austenitic-ferritic) stainless steel plate, sheet and strip (UNS number, no type name printed). Specified in ASTM A240/A240M:2025.

Category: Stainless Steel
Grade Details
GradeASTM A240/A240M:2025 S31260
Standard ASTM A240/A240M:2025
ApplicationsPressure vessels and general applications (plate, sheet and strip)
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
ASTM A959 S31260 ASTM A959:2011 USA No activity yet
ASTM A959 S39274 ASTM A959:2011 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 S31260 ASTM A959:2011 Strong Match
ASTM A959 S39274 ASTM A959:2011 Strong Match
ASTM A959 S32506 ASTM A959:2011 Close Alternative
ASTM A276/A276M S32506 ASTM A276/A276M:2017 Close Alternative
EN 10088-1 X2CrNiMoCuWN25-7-4 EN 10088-1:2014 Close Alternative
EN 10088-1 X2CrNiMoCuWN25-7-4 EN 10088-1:2023 Close Alternative
ASTM A959 S32760 ASTM A959:2011 Close Alternative
ASTM A959 S32520 ASTM A959:2011 Close Alternative
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C Mn P S Si Cr Ni Mo N Cu W
<=0.03 <=1.00 <=0.030 <=0.030 <=0.75 24.0-26.0 5.5-7.5 2.5-3.5 0.10-0.30 0.20-0.80 0.10-0.50
Mechanical Properties
Tensile Strength >=690 MPa
Yield Strength >=485 MPa
Elongation >=20%
Hardness <=290 HB
Condition Plate, sheet and strip; yield by 0.2 percent offset

More data from ASTM A240/A240M:2025

From the standard
Mechanical properties 1 condition(s)
Product or thicknessTensile strength, min (MPa)Yield strength, min (MPa)Elongation in 50 mm, min (%)
All69048520
Minimum values; yield strength by the 0.2 percent offset method.
Source: ASTM A240/A240M:2025, Table 2
Hardness 1 condition(s)
Product or thicknessBrinell HBW, maxRockwell, max
All290-
Maximum values; either Brinell or Rockwell scale may be used.
Source: ASTM A240/A240M:2025, Table 2

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