Close Alternative — 84.8% match
based on chemical composition and mechanical property overlap.
BS 970 EN207 (BS 970:1955) and SAE J404 5120 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN207 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 5120 is defined under SAE International, originating from United States.
As per chemical composition, BS 970 EN207 vs SAE J404 5120 is a 84.8% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 84.8%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 EN207
Not documented
SAE J404 5120
Case hardened gears, pins, shafts, cams, automotive transmission parts
Can BS 970 EN207 Be Substituted With SAE J404 5120?
BS 970 EN207 and SAE J404 5120 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between BS 970 EN207 and SAE J404 5120?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN207 be substituted with SAE J404 5120?
BS 970 EN207 and SAE J404 5120 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.