Strong Match — 92.4% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 304S11 (BS 970 (Part 1):1983) and ASTM A276/A276M S30403 (ASTM A276/A276M:2017) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 1) 304S11 is typically used for austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (table 14, with table 15 for the cold drawn condition)., while ASTM A276/A276M S30403 is commonly used for stainless steel bars and shapes (hot-finished or cold-finished).
BS 970 (Part 1) 304S11 is defined under British Standards (BS), originating from United Kingdom, while ASTM A276/A276M S30403 is defined under ASTM International, originating from United States.
As per chemical composition, BS 970 (Part 1) 304S11 vs ASTM A276/A276M S30403 is a 92.4% 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 92.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
BS 970 (Part 1) 304S11
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
BS 970 (Part 1) 304S11
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
ASTM A276/A276M S30403
Stainless steel bars and shapes (hot-finished or cold-finished)
Can BS 970 (Part 1) 304S11 Be Substituted With ASTM A276/A276M S30403?
BS 970 (Part 1) 304S11 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 BS 970 (Part 1) 304S11 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 BS 970 (Part 1) 304S11 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 BS 970 (Part 1) 304S11 be substituted with ASTM A276/A276M S30403?
BS 970 (Part 1) 304S11 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 BS 970 (Part 1) 304S11 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.