Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
ASTM A959 443 (ASTM A959:2011) and EN 10088-1 1.4401 (EN 10088-1:2014) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 443 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while EN 10088-1 1.4401 is commonly used for marine, chemical processing, pharmaceutical equipment.
ASTM A959 443 is defined under ASTM International, originating from United States, while EN 10088-1 1.4401 is defined under European Standard (EN), originating from Europe.
As per chemical composition, ASTM A959 443 vs EN 10088-1 1.4401 is a 54.4% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A959 443
EN 10088-1 1.4401
Tensile Strength
Not specified
≥520 MPa
Yield Strength
Not specified
≥210 MPa
Elongation
Not specified
≥40%
Hardness
Not specified
≤215 HB
Typical Applications
ASTM A959 443
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
EN 10088-1 1.4401
Marine, chemical processing, pharmaceutical equipment
Key Differences
ASTM A959 443 specifies Cu, P, S which are not specified for EN 10088-1 1.4401.
EN 10088-1 1.4401 specifies Mo which is not specified for ASTM A959 443.
Can ASTM A959 443 Be Substituted With EN 10088-1 1.4401?
ASTM A959 443 and EN 10088-1 1.4401 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between ASTM A959 443 and EN 10088-1 1.4401?
ASTM A959 443 specifies Cu, P, S which are not specified for EN 10088-1 1.4401. EN 10088-1 1.4401 specifies Mo which is not specified for ASTM A959 443.
Can ASTM A959 443 be substituted with EN 10088-1 1.4401?
ASTM A959 443 and EN 10088-1 1.4401 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.