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BS 970 EN48A vs IS 4367 55Si7

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

BS 970 EN48A (BS 970:1955) and IS 4367 55Si7 (IS 4367:1991) 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 4367 55Si7 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN48A vs IS 4367 55Si7 is a 79.4% 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 10083-3 51CrV4 EN 10089 55Cr3 GB/T 1222 55CrMnA IS 3195 113C6 IS 3431 50Cr4V2 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V EN 10083-1 51CrV4 IS 1570 (Part 4) 55Si7
Match Breakdown
CHEMISTRY MATCH
79.4%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN48A IS 4367 55Si7
Standard BS 970:1955 IS 4367:1991
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 <=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 EN48A IS 4367 55Si7
Tensile Strength Not specified 1300-1500 MPa
Hardness Not specified 380-440 HB
Hardness (soft annealed) Not specified <=245 HB
Condition Not specified Hardened and tempered, ruling section up to 100 mm
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 4367 55Si7
Not documented
Key Differences
Can BS 970 EN48A Be Substituted With IS 4367 55Si7?
BS 970 EN48A and IS 4367 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.
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BS 970 EN48A
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IS 4367 55Si7
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Frequently Asked Questions
What is the difference between BS 970 EN48A and IS 4367 55Si7?
BS 970 EN48A specifies Cr which is not specified for IS 4367 55Si7.
Can BS 970 EN48A be substituted with IS 4367 55Si7?
BS 970 EN48A and IS 4367 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.