Strong Match — 90.4% match
based on chemical composition and mechanical property overlap.
SAE J404 5132 (SAE J404:2000) and BS 970 EN18B (BS 970:1955) are both steel grades.
Both fall under the Alloy Steel category.
SAE J404 5132 is defined under SAE International, originating from United States, while BS 970 EN18B is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, SAE J404 5132 vs BS 970 EN18B is a 90.4% 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 90.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
SAE J404 5132
BS 970 EN18B
Tensile Strength
Not specified
≥695 MPa (45 tons/sq in, converted)
Yield Strength
Not specified
≥525 MPa (34 tons/sq in, converted)
Elongation
Not specified
≥22%
Hardness
Not specified
201-255 HB
Condition
Not specified
Hardened and tempered R, ruling section 4 in (lowest-strength condition of the standard)
Typical Applications
SAE J404 5132
Chemistry-only alloy steel grade; see the composition notes for product scope
BS 970 EN18B
Not documented
Can SAE J404 5132 Be Substituted With BS 970 EN18B?
SAE J404 5132 and BS 970 EN18B overlap closely enough on chemistry and mechanical properties that BS 970 EN18B is often considered as a substitute for SAE J404 5132 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 SAE J404 5132 and BS 970 EN18B?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can SAE J404 5132 be substituted with BS 970 EN18B?
SAE J404 5132 and BS 970 EN18B overlap closely enough on chemistry and mechanical properties that BS 970 EN18B is often considered as a substitute for SAE J404 5132 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.