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BS 970 EN44 vs IS 5517 55Cr3

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 EN44 (BS 970:1955) and IS 5517 55Cr3 (IS 5517:1993) are both steel grades. Both fall under the Spring Steel category. BS 970 EN44 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 EN44 vs IS 5517 55Cr3 is a 74.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 EN44:
BS 970 EN42D IS 3195 113C6 IS 3195 52Cr4Mo2V IS 3195 98C6 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 EN 10083-3 51CrV4 EN 10089 55Cr3 IS 3431 50Cr4V2 EN 10083-1 51CrV4 GB/T 1222 55CrMnA
Match Breakdown
CHEMISTRY MATCH
74.1%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN44 IS 5517 55Cr3
Standard BS 970:1955 IS 5517:1993
Category Spring Steel Spring Steel
C (%) 0.90-1.20 0.50-0.60
Si (%) <=0.30 0.10-0.35
Mn (%) 0.45-0.70 0.60-0.80
S (%) <=0.050 <=0.035
P (%) <=0.050 <=0.035
Cr (%) Not specified 0.60-0.80
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 EN44 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 EN44
Bars for oil hardening and tempering.
IS 5517 55Cr3
Not documented
Key Differences
Can BS 970 EN44 Be Substituted With IS 5517 55Cr3?
BS 970 EN44 and IS 5517 55Cr3 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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BS 970 EN44
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IS 5517 55Cr3
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Frequently Asked Questions
What is the difference between BS 970 EN44 and IS 5517 55Cr3?
IS 5517 55Cr3 specifies Cr which is not specified for BS 970 EN44.
Can BS 970 EN44 be substituted with IS 5517 55Cr3?
BS 970 EN44 and IS 5517 55Cr3 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.