Strong Match — 95.7% match
based on chemical composition and mechanical property overlap.
ASTM A276/A276M S30940 (ASTM A276/A276M:2017) and ASTM A240/A240M S30941 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A276/A276M S30940 is typically used for stainless steel bars and shapes (hot-finished or cold-finished), while ASTM A240/A240M S30941 is commonly used for pressure vessels and general applications (plate, sheet and strip).
ASTM A276/A276M S30940 is defined under ASTM International, originating from United States, while ASTM A240/A240M S30941 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A276/A276M S30940 vs ASTM A240/A240M S30941 is a 93.6% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 95.7%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A276/A276M S30940
ASTM A240/A240M S30941
Tensile Strength
>=515 MPa
>=515 MPa
Yield Strength
>=205 MPa
>=205 MPa
Elongation
>=40%
>=40%
Condition
Condition A (Annealed), hot-finished, all sizes (first row printed)
Plate, sheet and strip; yield by 0.2 percent offset
Hardness
Not specified
<=217 HB
Typical Applications
ASTM A276/A276M S30940
Stainless steel bars and shapes (hot-finished or cold-finished)
ASTM A240/A240M S30941
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A276/A276M S30940 Be Substituted With ASTM A240/A240M S30941?
ASTM A276/A276M S30940 and ASTM A240/A240M S30941 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S30941 is often considered as a substitute for ASTM A276/A276M S30940 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 A276/A276M S30940 and ASTM A240/A240M S30941?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A276/A276M S30940 be substituted with ASTM A240/A240M S30941?
ASTM A276/A276M S30940 and ASTM A240/A240M S30941 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S30941 is often considered as a substitute for ASTM A276/A276M S30940 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.