ASTM A240/A240M:2025 S33426: S33426: 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.
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
<=0.030
<=1.00
<=0.030
<=0.015
0.80-1.50
19.5-22.0
19.0-21.0
1.80-2.20
Mechanical Properties
Tensile Strength
>=515 MPa
Yield Strength
>=205 MPa
Elongation
>=30%
Hardness
<=217 HB
Condition
t <= 0.12 in. [3 mm] (first condition printed); yield by 0.2 percent offset
More data from ASTM A240/A240M:2025
From the standard
Mechanical properties2 condition(s)
Product or thickness
Tensile strength, min (MPa)
Yield strength, min (MPa)
Elongation in 50 mm, min (%)
t <= 0.12 in. [3 mm]
515
205
30
t > 0.12 in. [3 mm]
475
170
35
Minimum values; yield strength by the 0.2 percent offset method.
Source: ASTM A240/A240M:2025, Table 2
Hardness2 condition(s)
Product or thickness
Brinell HBW, max
Rockwell, max
t <= 0.12 in. [3 mm]
217
95 HRBW
t > 0.12 in. [3 mm]
217
95 HRBW
Maximum values; either Brinell or Rockwell scale may be used.
Source: ASTM A240/A240M:2025, Table 2
Cold bend1 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
Active ASTM A240/A240M:2025 S33426 Listings on M-EX (For Sale)