Strong Match — 96% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 3) 080M50 (BS 970 (Part 3):1991) and BS 970 EN43A (BS 970:1955) are both steel grades.
Both fall under the Carbon Steel category.
BS 970 (Part 3) 080M50 is typically used for used for shafts, rollers, wear-resistant parts, gears, springs, and machine components., while BS 970 EN43A is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable hardened and tempered for 45/55 (r) and 50/60 (s) tons/sq in according to ruling section; purchaser to state normalised, cold drawn or hardened and tempered r or s. en 43a to 43e..
BS 970 (Part 3) 080M50 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN43A is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 (Part 3) 080M50 vs BS 970 EN43A is a 96% 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 96%.
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 (Part 3) 080M50
BS 970 EN43A
Tensile Strength
Not specified
≥618 MPa (40 tons/sq in, converted)
Yield Strength
Not specified
≥324 MPa (21 tons/sq in, converted)
Elongation
Not specified
≥18%
Hardness
Not specified
179-229 HB
Condition
Not specified
Normalised, ruling section 1 1/8 in (lowest-strength condition of the standard)
Typical Applications
BS 970 (Part 3) 080M50
Used for shafts, rollers, wear-resistant parts, gears, springs, and machine components.
BS 970 EN43A
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable hardened and tempered for 45/55 (R) and 50/60 (S) tons/sq in according to ruling section; purchaser to state normalised, cold drawn or hardened and tempered R or S. En 43A to 43E.
Can BS 970 (Part 3) 080M50 Be Substituted With BS 970 EN43A?
BS 970 (Part 3) 080M50 and BS 970 EN43A overlap closely enough on chemistry and mechanical properties that BS 970 EN43A is often considered as a substitute for BS 970 (Part 3) 080M50 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 (Part 3) 080M50 and BS 970 EN43A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 080M50 be substituted with BS 970 EN43A?
BS 970 (Part 3) 080M50 and BS 970 EN43A overlap closely enough on chemistry and mechanical properties that BS 970 EN43A is often considered as a substitute for BS 970 (Part 3) 080M50 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.