Strong Match — 89.7% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 527A17 (BS 970 (Part 1):1991) and SAE J404 5115 (SAE J404:2000) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 (Part 1) 527A17 is typically used for case hardening steel (section four), while SAE J404 5115 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope.
BS 970 (Part 1) 527A17 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 5115 is defined under SAE International, originating from United States.
As per chemical composition, BS 970 (Part 1) 527A17 vs SAE J404 5115 is a 89.7% 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 89.7%.
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) 527A17
SAE J404 5115
Condition
Case hardened, 19 mm test bar
Not specified
Tensile Strength
770 MPa min
Not specified
Elongation
12 % min
Not specified
Typical Applications
BS 970 (Part 1) 527A17
Case hardening steel (section four)
SAE J404 5115
Chemistry-only alloy steel grade; see the composition notes for product scope
Key Differences
SAE J404 5115 specifies P, S, Si which are not specified for BS 970 (Part 1) 527A17.
Can BS 970 (Part 1) 527A17 Be Substituted With SAE J404 5115?
BS 970 (Part 1) 527A17 and SAE J404 5115 overlap closely enough on chemistry and mechanical properties that SAE J404 5115 is often considered as a substitute for BS 970 (Part 1) 527A17 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) 527A17 and SAE J404 5115?
SAE J404 5115 specifies P, S, Si which are not specified for BS 970 (Part 1) 527A17.
Can BS 970 (Part 1) 527A17 be substituted with SAE J404 5115?
BS 970 (Part 1) 527A17 and SAE J404 5115 overlap closely enough on chemistry and mechanical properties that SAE J404 5115 is often considered as a substitute for BS 970 (Part 1) 527A17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.