Strong Match — 88% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S31651 (ASTM A240/A240M:2025) and ASTM A276/A276M S31651 (ASTM A276/A276M:2017) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S31651 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A276/A276M S31651 is commonly used for stainless steel bars and shapes (hot-finished or cold-finished).
ASTM A240/A240M S31651 is defined under ASTM International, originating from United States, while ASTM A276/A276M S31651 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A240/A240M S31651 vs ASTM A276/A276M S31651 is a 98.6% match.
As per mechanical properties, the match is 66.7%.
Combined, this makes them a strong match overall at 88%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A240/A240M S31651
ASTM A276/A276M S31651
Tensile Strength
>=550 MPa
>=550 MPa
Yield Strength
>=240 MPa
>=240 MPa
Elongation
>=35%
>=30%
Hardness
<=217 HB
Not specified
Condition
Plate, sheet and strip; yield by 0.2 percent offset
Condition A (Annealed), hot-finished or cold-finished, all sizes (first row printed)
Typical Applications
ASTM A240/A240M S31651
Pressure vessels and general applications (plate, sheet and strip)
ASTM A276/A276M S31651
Stainless steel bars and shapes (hot-finished or cold-finished)
Can ASTM A240/A240M S31651 Be Substituted With ASTM A276/A276M S31651?
ASTM A240/A240M S31651 and ASTM A276/A276M S31651 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S31651 is often considered as a substitute for ASTM A240/A240M S31651 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 A240/A240M S31651 and ASTM A276/A276M S31651?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S31651 be substituted with ASTM A276/A276M S31651?
ASTM A240/A240M S31651 and ASTM A276/A276M S31651 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S31651 is often considered as a substitute for ASTM A240/A240M S31651 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.