ASTM A240/A240M:2025 N08020: N08020: 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
Cu
Nb
<=0.07
<=2.00
<=0.045
<=0.035
<=1.00
19.0-21.0
32.0-38.0
2.00-3.00
3.00-4.00
<=1.00
Mechanical Properties
Tensile Strength
>=550 MPa
Yield Strength
>=240 MPa
Elongation
>=30%
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 properties1 condition(s)
Product or thickness
Tensile strength, min (MPa)
Yield strength, min (MPa)
Elongation in 50 mm, min (%)
All
550
240
30
Minimum values; yield strength by the 0.2 percent offset method. Elongation for thickness under 0.015 in. [0.38 mm] is 20 % minimum in 1 in. [25.4 mm].
Source: ASTM A240/A240M:2025, Table 2
Hardness1 condition(s)
Product or thickness
Brinell HBW, max
Rockwell, max
All
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
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