Close Alternative — 84.6% match
based on chemical composition and mechanical property overlap.
ASTM A516/A516M Grade 65 (ASTM A516/A516M:2025) and EN 10084 C16E (EN 10084:2008) are both steel grades.
Both fall under the Carbon Steel category.
ASTM A516/A516M Grade 65 is typically used for welded pressure vessels where improved notch toughness is important, while EN 10084 C16E is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1).
ASTM A516/A516M Grade 65 is defined under ASTM International, originating from United States, while EN 10084 C16E is defined under European Standard (EN), originating from Europe.
As per chemical composition, ASTM A516/A516M Grade 65 vs EN 10084 C16E is a 84.6% 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 84.6%.
Frequently Compared With ASTM A516/A516M Grade 65:
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A516/A516M Grade 65
EN 10084 C16E
Tensile Strength
450-585 MPa
Not specified
Yield Strength
>=240 MPa
Not specified
Elongation
>=19%
Not specified
Condition
Tension test per Table 2; one set of values for all thicknesses; plates 40 mm and under normally as-rolled, over 40 mm normalized; Elongation is in 200 mm gauge length, 50 mm values in the tensile block
Soft annealed
Hardness
Not specified
Soft annealed: 156 HB max
Typical Applications
ASTM A516/A516M Grade 65
Welded pressure vessels where improved notch toughness is important
EN 10084 C16E
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Can ASTM A516/A516M Grade 65 Be Substituted With EN 10084 C16E?
ASTM A516/A516M Grade 65 and EN 10084 C16E 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 A516/A516M Grade 65 and EN 10084 C16E?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A516/A516M Grade 65 be substituted with EN 10084 C16E?
ASTM A516/A516M Grade 65 and EN 10084 C16E 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.