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BS 970 EN48 vs IS 5517 55Cr3

Close Alternative — 79.5% match based on chemical composition and mechanical property overlap.

BS 970 EN48 (BS 970:1955) and IS 5517 55Cr3 (IS 5517:1993) are both steel grades. Both fall under the Spring Steel category. BS 970 EN48 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 EN48 vs IS 5517 55Cr3 is a 79.5% 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 79.5%.

Frequently Compared With BS 970 EN48:
EN 10089 50CrV4 EN 10089 55Cr3 EN 10083-3 51CrV4 EN 10089 55Si7 IS 3431 50Cr4V2 GB/T 1222 55CrMnA IS 3195 50Cr4V2 IS 3195 113C6 IS 3195 60Cr4V2 EN 10083-1 51CrV4 EN 10083-1 51CrV4 IS 3431 60Cr4V2
Match Breakdown
CHEMISTRY MATCH
79.5%
MECHANICAL MATCH
No shared data
OVERALL
79.5%
Specifications
Property BS 970 EN48 IS 5517 55Cr3
Standard BS 970:1955 IS 5517:1993
Category Spring Steel Spring Steel
C (%) 0.45-0.55 0.50-0.60
Si (%) 0.10-0.50 0.10-0.35
Mn (%) 0.50-0.80 0.60-0.80
Cr (%) 1.00-1.40 0.60-0.80
S (%) <=0.050 <=0.035
P (%) <=0.050 <=0.035
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 EN48 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 EN48
High duty springs, valve springs
IS 5517 55Cr3
Not documented
Can BS 970 EN48 Be Substituted With IS 5517 55Cr3?
BS 970 EN48 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.
Forms & Sizes Available on M-EX
BS 970 EN48
Flat Bar → (3 listings)
Thickness: 30–30 mm (1.18–1.18 in)
Width: 150–150 mm (5.91–5.91 in)
Length: 2500–2800 mm (98.43–110.24 in)
IS 5517 55Cr3
No active listings currently.
On M-EX Right Now
BS 970 EN48
3 active listings and RFQs →
IS 5517 55Cr3
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN48 and IS 5517 55Cr3?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN48 be substituted with IS 5517 55Cr3?
BS 970 EN48 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.