Close Alternative — 75% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S82122 (ASTM A240/A240M:2025) and JIS G4304 SUS821L1 (JIS G4304:2021) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S82122 is typically used for pressure vessels and general applications (plate, sheet and strip), while JIS G4304 SUS821L1 is commonly used for hot-rolled stainless steel plates and strips.
ASTM A240/A240M S82122 is defined under ASTM International, originating from United States, while JIS G4304 SUS821L1 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, ASTM A240/A240M S82122 vs JIS G4304 SUS821L1 is a 100% match.
As per mechanical properties, the match is 25%.
Combined, this makes them a close alternative overall at 75%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A240/A240M S82122
JIS G4304 SUS821L1
Tensile Strength
>=700 MPa
>=600 MPa
Yield Strength
>=500 MPa
>=400 MPa
Elongation
>=25%
>=20%
Hardness
<=290 HB
<=290 HB
Condition
t < 0.118 in. [3.00 mm] (first condition printed); yield by 0.2 percent offset
Solution heat treated plate and strip, thickness up to 2.0 mm for elongation; proof strength applies only when specified
Typical Applications
ASTM A240/A240M S82122
Pressure vessels and general applications (plate, sheet and strip)
JIS G4304 SUS821L1
Hot-rolled stainless steel plates and strips
Can ASTM A240/A240M S82122 Be Substituted With JIS G4304 SUS821L1?
ASTM A240/A240M S82122 and JIS G4304 SUS821L1 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between ASTM A240/A240M S82122 and JIS G4304 SUS821L1?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S82122 be substituted with JIS G4304 SUS821L1?
ASTM A240/A240M S82122 and JIS G4304 SUS821L1 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.