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BS 970 EN48A vs IS 1570 (Part 4) 55Si7

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

BS 970 EN48A (BS 970:1955) and IS 1570 (Part 4) 55Si7 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Spring Steel category. BS 970 EN48A is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 55Si7 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN48A vs IS 1570 (Part 4) 55Si7 is a 81.1% 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 EN48A:
IS 5517 55Cr3 EN 10089 55Cr3 EN 10083-3 51CrV4 GB/T 1222 55CrMnA IS 3431 50Cr4V2 IS 3195 113C6 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V IS 4367 55Si7
Match Breakdown
CHEMISTRY MATCH
81.1%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN48A IS 1570 (Part 4) 55Si7
Standard BS 970:1955 IS 1570 (Part 4):1988
Category Spring Steel Spring Steel
C (%) 0.50-0.60 0.50-0.60
Si (%) 1.35-1.65 1.50-2.00
Mn (%) 0.60-0.90 0.80-1.00
Cr (%) 0.55-0.85 Not specified
S (%) <=0.050 Not specified
P (%) <=0.050 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 EN48A
Bars for oil hardening and tempering. Laminated spring plates to this specification shall conform to the dimensional requirements in Appendix C.
IS 1570 (Part 4) 55Si7
Not documented
Key Differences
Can BS 970 EN48A Be Substituted With IS 1570 (Part 4) 55Si7?
BS 970 EN48A and IS 1570 (Part 4) 55Si7 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.
On M-EX Right Now
BS 970 EN48A
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IS 1570 (Part 4) 55Si7
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Frequently Asked Questions
What is the difference between BS 970 EN48A and IS 1570 (Part 4) 55Si7?
BS 970 EN48A specifies Cr, S, P which are not specified for IS 1570 (Part 4) 55Si7.
Can BS 970 EN48A be substituted with IS 1570 (Part 4) 55Si7?
BS 970 EN48A and IS 1570 (Part 4) 55Si7 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.