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BS 970 EN43J vs BS 970 EN43

Strong Match — 95% match based on chemical composition and mechanical property overlap.

BS 970 EN43J (BS 970:1955) and BS 970 EN43 (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. BS 970 EN43J is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN43 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN43J vs BS 970 EN43 is a 95% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 95%.

Frequently Compared With BS 970 EN43J:
BS 970 EN42B IS 3195 113C6 IS 3431 50Cr4V2 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 EN 10083-3 51CrV4 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V IS 5517 55Cr3 EN 10089 55Cr3 BS 970 EN42E
Match Breakdown
CHEMISTRY MATCH
95%
MECHANICAL MATCH
No shared data
OVERALL
95%
Specifications
Property BS 970 EN43J BS 970 EN43
Standard BS 970:1955 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.45-0.60 0.45-0.60
Si (%) <=0.35 0.10-0.40
Mn (%) 0.60-0.90 0.60-0.80
S (%) <=0.050 <=0.050
P (%) <=0.050 <=0.050
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 EN43J
Not documented
BS 970 EN43
Bars for water hardening and tempering. Laminated spring plates to conform to dimensional requirements of Appendix C.
Can BS 970 EN43J Be Substituted With BS 970 EN43?
BS 970 EN43J and BS 970 EN43 overlap closely enough on chemistry and mechanical properties that BS 970 EN43 is often considered as a substitute for BS 970 EN43J in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 EN43J
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BS 970 EN43
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Frequently Asked Questions
What is the difference between BS 970 EN43J and BS 970 EN43?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN43J be substituted with BS 970 EN43?
BS 970 EN43J and BS 970 EN43 overlap closely enough on chemistry and mechanical properties that BS 970 EN43 is often considered as a substitute for BS 970 EN43J in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.