Strong Match — 98.7% match
based on chemical composition and mechanical property overlap.
BS 970 EN15A (BS 970:1955) and BS 970 EN15 (BS 970:1955) are both steel grades.
Both fall under the Carbon Steel category.
BS 970 EN15A is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for 40/50 (q), 45/55 (r), 50/60 (s) tons/sq in according to ruling section., while BS 970 EN15 is commonly used for heavy duty shafts, couplings, general engineering.
BS 970 EN15A is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN15 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 EN15A vs BS 970 EN15 is a 98.1% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 98.7%.
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 EN15A
BS 970 EN15
Tensile Strength
≥618 MPa (40 tons/sq in, converted)
≥618 MPa (40 tons/sq in, converted)
Yield Strength
≥432 MPa (28 tons/sq in, converted)
≥432 MPa (28 tons/sq in, converted)
Elongation
≥22%
≥22%
Hardness
179-229 HB
179-229 HB
Condition
Hardened and tempered Q, ruling section 4 in (lowest-strength condition of the standard)
Hardened and tempered Q, ruling section 6 in (lowest-strength condition of the standard)
Typical Applications
BS 970 EN15A
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for 40/50 (Q), 45/55 (R), 50/60 (S) tons/sq in according to ruling section.
BS 970 EN15
Heavy duty shafts, couplings, general engineering
Can BS 970 EN15A Be Substituted With BS 970 EN15?
BS 970 EN15A and BS 970 EN15 overlap closely enough on chemistry and mechanical properties that BS 970 EN15 is often considered as a substitute for BS 970 EN15A 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 EN15A and BS 970 EN15?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN15A be substituted with BS 970 EN15?
BS 970 EN15A and BS 970 EN15 overlap closely enough on chemistry and mechanical properties that BS 970 EN15 is often considered as a substitute for BS 970 EN15A in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.