Close Alternative — 72.9% match
based on chemical composition and mechanical property overlap.
BS 970 EN47 (BS 970:1955) and IS 5517 55Cr3 (IS 5517:1993) are both steel grades.
Both fall under the Spring Steel category.
BS 970 EN47 is defined under British Standards (BS), originating from United Kingdom, while IS 5517 55Cr3 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 EN47 vs IS 5517 55Cr3 is a 72.9% 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 72.9%.
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 EN47
IS 5517 55Cr3
Tensile Strength
Not specified
900-1050 MPa
Yield Strength (0.2% proof)
Not specified
660 MPa min
Elongation
Not specified
>=12%
Izod Impact
Not specified
35 J min
Hardness (annealed)
Not specified
<=220 HB
Condition
Not specified
Hardened and tempered, ruling section up to 63 mm
Typical Applications
BS 970 EN47
Coil springs, leaf springs, torsion bars, valve springs, suspension springs, industrial springs requiring high fatigue life.
IS 5517 55Cr3
Not documented
Key Differences
BS 970 EN47 specifies V which is not specified for IS 5517 55Cr3.
Can BS 970 EN47 Be Substituted With IS 5517 55Cr3?
BS 970 EN47 and IS 5517 55Cr3 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 EN47 and IS 5517 55Cr3?
BS 970 EN47 specifies V which is not specified for IS 5517 55Cr3.
Can BS 970 EN47 be substituted with IS 5517 55Cr3?
BS 970 EN47 and IS 5517 55Cr3 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.