Close Alternative — 82.2% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S43400 (ASTM A240/A240M:2025) and EN 10088-1 X6CrMoS17 (EN 10088-1:2014) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S43400 is defined under ASTM International, originating from United States, while EN 10088-1 X6CrMoS17 is defined under European Standard (EN), originating from Europe.
As per chemical composition, ASTM A240/A240M S43400 vs EN 10088-1 X6CrMoS17 is a 82.2% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 82.2%.
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 S43400
EN 10088-1 X6CrMoS17
Tensile Strength
>=450 MPa
Not specified
Yield Strength
>=240 MPa
Not specified
Elongation
>=22%
Not specified
Hardness
<=89 HRBW
Not specified
Condition
Plate, sheet and strip; yield by 0.2 percent offset
Not specified
Typical Applications
ASTM A240/A240M S43400
Pressure vessels and general applications (plate, sheet and strip)
EN 10088-1 X6CrMoS17
Not documented
Can ASTM A240/A240M S43400 Be Substituted With EN 10088-1 X6CrMoS17?
ASTM A240/A240M S43400 and EN 10088-1 X6CrMoS17 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 S43400 and EN 10088-1 X6CrMoS17?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S43400 be substituted with EN 10088-1 X6CrMoS17?
ASTM A240/A240M S43400 and EN 10088-1 X6CrMoS17 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.