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ASTM A240/A240M:2025 S31277 Steel: Specifications & Listings

ASTM A240/A240M:2025 S31277: S31277: austenitic (chromium-nickel or chromium-manganese-nickel) 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 S31277
Standard ASTM A240/A240M:2025
ApplicationsPressure vessels and general applications (plate, sheet and strip)
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 N08926 ASTM A959:2011 Close Alternative
ASTM A959 904L ASTM A959:2011 Related Material
EN 10088-1 X1NiCrMoCuN25-20-7 EN 10088-1:2014 Related Material
EN 10088-1 X1NiCrMoCuN25-20-7 EN 10088-1:2023 Related Material
ASTM A959 S32654 ASTM A959:2011 Related Material
EN 10088-1 X1CrNiMoCuN24-22-8 EN 10088-1:2014 Related Material
EN 10088-1 X1CrNiMoCuN24-22-8 EN 10088-1:2023 Related Material
EN 10088-1 X1CrNiMoCuN25-25-5 EN 10088-1:2014 Related Material
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
<=0.020 <=3.00 <=0.030 <=0.010 <=0.50 20.5-23.0 26.0-28.0 6.5-8.0 0.30-0.40 0.50-1.50
Mechanical Properties
Tensile Strength >=770 MPa
Yield Strength >=360 MPa
Elongation >=40%
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 (%)
All77036040
Minimum values; yield strength by the 0.2 percent offset method.
Source: ASTM A240/A240M:2025, Table 2
Cold bend 1 value
Cold bend angle
not required
Bend tests are not required for chromium steels thicker than 1 in. [25 mm] or for any austenitic or duplex steel regardless of thickness.
Source: ASTM A240/A240M:2025, Table 2

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