Close Alternative — 81.9% match
based on chemical composition and mechanical property overlap.
BS 970 EN31 (BS 970:1955) and SAE J404 52100 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN31 is typically used for ball and roller bearings, gauges, dies, while SAE J404 52100 is commonly used for ball bearings, roller bearings, races, bushings, precision tooling, dies, gauges.
BS 970 EN31 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 52100 is defined under SAE International, originating from United States.
As per chemical composition, BS 970 EN31 vs SAE J404 52100 is a 81.9% 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 81.9%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Can BS 970 EN31 Be Substituted With SAE J404 52100?
BS 970 EN31 and SAE J404 52100 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 EN31 and SAE J404 52100?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN31 be substituted with SAE J404 52100?
BS 970 EN31 and SAE J404 52100 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.