Close Alternative — 78.4% match
based on chemical composition and mechanical property overlap.
BS 970 EN61 (BS 970:1955) and BS 970 EN57 (BS 970:1955) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 EN61 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN57 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, BS 970 EN61 vs BS 970 EN57 is a 78.4% 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 78.4%.
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 EN61
BS 970 EN57
Tensile Strength
Not specified
≥849 MPa (55 tons/sq in, converted)
Yield Strength
Not specified
≥680 MPa (44 tons/sq in, converted)
Elongation
Not specified
≥15%
Hardness
Not specified
248 HB
Condition
Not specified
Hardened and tempered (ruling 6), ruling section 6 in (lowest-strength condition of the standard)
Typical Applications
BS 970 EN61
Not documented
BS 970 EN57
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 55 tons/sq in min.
Can BS 970 EN61 Be Substituted With BS 970 EN57?
BS 970 EN61 and BS 970 EN57 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 BS 970 EN61 and BS 970 EN57?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN61 be substituted with BS 970 EN57?
BS 970 EN61 and BS 970 EN57 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.