Strong Match — 90% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S30451 (ASTM A240/A240M:2025) and EN 10088-1 X5CrNiN19-9 (EN 10088-1:2014) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S30451 is defined under ASTM International, originating from United States, while EN 10088-1 X5CrNiN19-9 is defined under European Standard (EN), originating from Europe.
As per chemical composition, ASTM A240/A240M S30451 vs EN 10088-1 X5CrNiN19-9 is a 90% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a strong match overall at 90%.
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 S30451
EN 10088-1 X5CrNiN19-9
Tensile Strength
>=550 MPa
Not specified
Yield Strength
>=240 MPa
Not specified
Elongation
>=30%
Not specified
Hardness
<=217 HB
Not specified
Condition
Plate, sheet and strip; yield by 0.2 percent offset
Not specified
Typical Applications
ASTM A240/A240M S30451
Pressure vessels and general applications (plate, sheet and strip)
EN 10088-1 X5CrNiN19-9
Not documented
Can ASTM A240/A240M S30451 Be Substituted With EN 10088-1 X5CrNiN19-9?
ASTM A240/A240M S30451 and EN 10088-1 X5CrNiN19-9 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X5CrNiN19-9 is often considered as a substitute for ASTM A240/A240M S30451 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between ASTM A240/A240M S30451 and EN 10088-1 X5CrNiN19-9?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S30451 be substituted with EN 10088-1 X5CrNiN19-9?
ASTM A240/A240M S30451 and EN 10088-1 X5CrNiN19-9 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X5CrNiN19-9 is often considered as a substitute for ASTM A240/A240M S30451 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.