Strong Match — 94.5% match
based on chemical composition and mechanical property overlap.
BS 970 EN2 (BS 970:1955) and SAE J403 1009 (SAE J403:2001) are both steel grades.
Both fall under the Carbon Steel category.
BS 970 EN2 is typically used for lightly stressed components, case hardened parts, while SAE J403 1009 is commonly used for chemistry-only grade; product scope as listed in the composition notes.
BS 970 EN2 is defined under British Standards (BS), originating from United Kingdom, while SAE J403 1009 is defined under SAE International, originating from United States.
As per chemical composition, BS 970 EN2 vs SAE J403 1009 is a 94.5% 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 94.5%.
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 EN2
SAE J403 1009
Tensile Strength
≥309 MPa (20 tons/sq in, converted)
Not specified
Elongation
≥28%
Not specified
Condition
, ruling section 6 in (lowest-strength condition of the standard)
Not specified
Typical Applications
BS 970 EN2
Lightly stressed components, case hardened parts
SAE J403 1009
Chemistry-only grade; product scope as listed in the composition notes
Can BS 970 EN2 Be Substituted With SAE J403 1009?
BS 970 EN2 and SAE J403 1009 overlap closely enough on chemistry and mechanical properties that SAE J403 1009 is often considered as a substitute for BS 970 EN2 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 EN2 and SAE J403 1009?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN2 be substituted with SAE J403 1009?
BS 970 EN2 and SAE J403 1009 overlap closely enough on chemistry and mechanical properties that SAE J403 1009 is often considered as a substitute for BS 970 EN2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.