Strong Match — 98.9% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 045A10 (BS 970 (Part 1):1983) and SAE J403 1010 (SAE J403:2009) are both steel grades.
Both fall under the Carbon Steel category.
BS 970 (Part 1) 045A10 is typically used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)., while SAE J403 1010 is commonly used for chemistry-only grade; product scope as listed in the composition notes.
BS 970 (Part 1) 045A10 is defined under British Standards (BS), originating from United Kingdom, while SAE J403 1010 is defined under SAE International, originating from United States.
As per chemical composition, BS 970 (Part 1) 045A10 vs SAE J403 1010 is a 98.9% 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 98.9%.
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 1) 045A10
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
SAE J403 1010
Chemistry-only grade; product scope as listed in the composition notes
Can BS 970 (Part 1) 045A10 Be Substituted With SAE J403 1010?
BS 970 (Part 1) 045A10 and SAE J403 1010 overlap closely enough on chemistry and mechanical properties that SAE J403 1010 is often considered as a substitute for BS 970 (Part 1) 045A10 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) 045A10 and SAE J403 1010?
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) 045A10 be substituted with SAE J403 1010?
BS 970 (Part 1) 045A10 and SAE J403 1010 overlap closely enough on chemistry and mechanical properties that SAE J403 1010 is often considered as a substitute for BS 970 (Part 1) 045A10 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.