Strong Match — 88.4% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 3) 665M17 (BS 970 (Part 3):1991) and SAE J404 4617 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 (Part 3) 665M17 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15), while SAE J404 4617 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope.
BS 970 (Part 3) 665M17 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 4617 is defined under SAE International, originating from United States.
As per chemical composition, BS 970 (Part 3) 665M17 vs SAE J404 4617 is a 88.4% 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 88.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 3) 665M17
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
SAE J404 4617
Chemistry-only alloy steel grade; see the composition notes for product scope
Can BS 970 (Part 3) 665M17 Be Substituted With SAE J404 4617?
BS 970 (Part 3) 665M17 and SAE J404 4617 overlap closely enough on chemistry and mechanical properties that SAE J404 4617 is often considered as a substitute for BS 970 (Part 3) 665M17 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 3) 665M17 and SAE J404 4617?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 665M17 be substituted with SAE J404 4617?
BS 970 (Part 3) 665M17 and SAE J404 4617 overlap closely enough on chemistry and mechanical properties that SAE J404 4617 is often considered as a substitute for BS 970 (Part 3) 665M17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.