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ASTM A240/A240M:2025 S44626 Steel: Specifications & Listings

ASTM A240/A240M:2025 S44626: S44626 (type XM-33): ferritic or martensitic (chromium) stainless steel plate, sheet and strip (UNS S44626). Specified in ASTM A240/A240M:2025.

Category: Stainless Steel
Grade Details
GradeASTM A240/A240M:2025 S44626
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 XM-33 ASTM A959:2011 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 XM-33 ASTM A959:2011 Strong Match
ASTM A959 329 ASTM A959:2011 Related Material
EN 10088-1 X4CrNiMo16-5-1 EN 10088-1:2014 Related Material
EN 10088-1 X4CrNiMo16-5-1 EN 10088-1:2023 Related Material
EN 10088-1 X5CrNiMoTi15-2 EN 10088-1:2014 Related Material
EN 10088-1 X5CrNiMoTi15-2 EN 10088-1:2023 Related Material
ASTM A959 S42035 ASTM A959:2011 Related Material
EN 10088-1 X39CrMo17-1 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 Ti
<=0.06 <=0.75 <=0.040 <=0.020 <=0.75 25.0-27.0 <=0.50 0.75-1.50 <=0.04 <=0.20 0.20-1.00
Mechanical Properties
Tensile Strength >=470 MPa
Yield Strength >=310 MPa
Elongation >=20%
Hardness <=217 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 (%)
All47031020
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
All21796 HRBW
Maximum values; either Brinell or Rockwell scale may be used.
Source: ASTM A240/A240M:2025, Table 2
Cold bend 1 value
Cold bend angle
180 deg
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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