Strong Match — 94.4% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 403S17 (BS 970 (Part 1):1983) and ASTM A276/A276M S40500 (ASTM A276/A276M:2017) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 1) 403S17 is typically used for stainless and heat resisting steel for mechanical and allied engineering purposes (table 13)., while ASTM A276/A276M S40500 is commonly used for stainless steel bars and shapes (hot-finished or cold-finished).
BS 970 (Part 1) 403S17 is defined under British Standards (BS), originating from United Kingdom, while ASTM A276/A276M S40500 is defined under ASTM International, originating from United States.
As per chemical composition, BS 970 (Part 1) 403S17 vs ASTM A276/A276M S40500 is a 94.4% 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 94.4%.
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) 403S17
ASTM A276/A276M S40500
Hardness
Not specified
<=207 HB
Condition
Not specified
Condition A (Annealed), hot-finished, all sizes (first row printed)
Typical Applications
BS 970 (Part 1) 403S17
Stainless and heat resisting steel for mechanical and allied engineering purposes (Table 13).
ASTM A276/A276M S40500
Stainless steel bars and shapes (hot-finished or cold-finished)
Key Differences
ASTM A276/A276M S40500 specifies Al which is not specified for BS 970 (Part 1) 403S17.
Can BS 970 (Part 1) 403S17 Be Substituted With ASTM A276/A276M S40500?
BS 970 (Part 1) 403S17 and ASTM A276/A276M S40500 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S40500 is often considered as a substitute for BS 970 (Part 1) 403S17 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) 403S17 and ASTM A276/A276M S40500?
ASTM A276/A276M S40500 specifies Al which is not specified for BS 970 (Part 1) 403S17.
Can BS 970 (Part 1) 403S17 be substituted with ASTM A276/A276M S40500?
BS 970 (Part 1) 403S17 and ASTM A276/A276M S40500 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S40500 is often considered as a substitute for BS 970 (Part 1) 403S17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.