Strong Match — 94.2% match
based on chemical composition and mechanical property overlap.
EN 10088-1 X8CrNi25-21 (EN 10088-1:2023) and ASTM A240/A240M S31008 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
EN 10088-1 X8CrNi25-21 is defined under European Standard (EN), originating from Europe, while ASTM A240/A240M S31008 is defined under ASTM International, originating from United States.
As per chemical composition, EN 10088-1 X8CrNi25-21 vs ASTM A240/A240M S31008 is a 94.2% 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 94.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10088-1 X8CrNi25-21
ASTM A240/A240M S31008
Tensile Strength
Not specified
>=515 MPa
Yield Strength
Not specified
>=205 MPa
Elongation
Not specified
>=40%
Hardness
Not specified
<=217 HB
Condition
Not specified
Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
EN 10088-1 X8CrNi25-21
Not documented
ASTM A240/A240M S31008
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
EN 10088-1 X8CrNi25-21 specifies N which is not specified for ASTM A240/A240M S31008.
Can EN 10088-1 X8CrNi25-21 Be Substituted With ASTM A240/A240M S31008?
EN 10088-1 X8CrNi25-21 and ASTM A240/A240M S31008 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S31008 is often considered as a substitute for EN 10088-1 X8CrNi25-21 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 EN 10088-1 X8CrNi25-21 and ASTM A240/A240M S31008?
EN 10088-1 X8CrNi25-21 specifies N which is not specified for ASTM A240/A240M S31008.
Can EN 10088-1 X8CrNi25-21 be substituted with ASTM A240/A240M S31008?
EN 10088-1 X8CrNi25-21 and ASTM A240/A240M S31008 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S31008 is often considered as a substitute for EN 10088-1 X8CrNi25-21 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.