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ASTM A240/A240M:2025 S44800 Steel: Specifications & Listings

ASTM A240/A240M:2025 S44800: S44800: ferritic or martensitic (chromium) stainless steel plate, sheet and strip (UNS number, no type name printed). Specified in ASTM A240/A240M:2025. Combined limit (percent): C + N at most 0.025.

Category: Stainless Steel
Grade Details
GradeASTM A240/A240M:2025 S44800
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 29-4-2 ASTM A959:2011 USA No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
ASTM A959 29-4-2 ASTM A959:2011 Strong Match
ASTM A276/A276M S44800 ASTM A276/A276M:2017 Close Alternative
ASTM A959 29-4 ASTM A959:2011 Related Material
ASTM A240/A240M S44700 ASTM A240/A240M:2025 Related Material
ASTM A276/A276M S44700 ASTM A276/A276M:2017 Related Material
ASTM A959 29-4C ASTM A959:2011 Related Material
ASTM A959 XM-27 ASTM A959:2011 Related Material
ASTM A959 S32803 ASTM A959:2011 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
<=0.010 <=0.30 <=0.025 <=0.020 <=0.20 28.0-30.0 2.00-2.50 3.5-4.2 <=0.020 <=0.15
Mechanical Properties
Tensile Strength >=550 MPa
Yield Strength >=415 MPa
Elongation >=20%
Hardness <=223 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 (%)
All55041520
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
All22320 HRC
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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