Strong Match — 96.7% match
based on chemical composition and mechanical property overlap.
ASTM A959 304L (ASTM A959:2011) and ASTM A276/A276M S30403 (ASTM A276/A276M:2017) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 304L is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A276/A276M S30403 is commonly used for stainless steel bars and shapes (hot-finished or cold-finished).
ASTM A959 304L is defined under ASTM International, originating from United States, while ASTM A276/A276M S30403 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A959 304L vs ASTM A276/A276M S30403 is a 96.7% 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 96.7%.
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 304L
ASTM A276/A276M S30403
Tensile Strength
Not specified
>=485 MPa
Yield Strength
Not specified
>=170 MPa
Elongation
Not specified
>=40%
Condition
Not specified
Condition A (Annealed), hot-finished, all sizes (first row printed)
Typical Applications
ASTM A959 304L
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A276/A276M S30403
Stainless steel bars and shapes (hot-finished or cold-finished)
Can ASTM A959 304L Be Substituted With ASTM A276/A276M S30403?
ASTM A959 304L and ASTM A276/A276M S30403 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S30403 is often considered as a substitute for ASTM A959 304L 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 A959 304L and ASTM A276/A276M S30403?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 304L be substituted with ASTM A276/A276M S30403?
ASTM A959 304L and ASTM A276/A276M S30403 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S30403 is often considered as a substitute for ASTM A959 304L in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.