Close Alternative — 80% match
based on chemical composition and mechanical property overlap.
SAE J404 4047 (SAE J404:2009) and BS 970 EN16 (BS 970:1955) are both steel grades.
Both fall under the Alloy Steel category.
SAE J404 4047 is typically used for chemistry-only alloy steel grade; see the composition notes for product scope, while BS 970 EN16 is commonly used for high tensile bolts, studs, general engineering.
SAE J404 4047 is defined under SAE International, originating from United States, while BS 970 EN16 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, SAE J404 4047 vs BS 970 EN16 is a 80% 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 80%.
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 4047
BS 970 EN16
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 6 in (lowest-strength condition of the standard)
Typical Applications
SAE J404 4047
Chemistry-only alloy steel grade; see the composition notes for product scope
BS 970 EN16
High tensile bolts, studs, general engineering
Can SAE J404 4047 Be Substituted With BS 970 EN16?
SAE J404 4047 and BS 970 EN16 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 SAE J404 4047 and BS 970 EN16?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can SAE J404 4047 be substituted with BS 970 EN16?
SAE J404 4047 and BS 970 EN16 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.