Post Stock Login Register

BS 970 EN43 vs BS 970 EN49A

Strong Match — 85.8% match based on chemical composition and mechanical property overlap.

BS 970 EN43 (BS 970:1955) and BS 970 EN49A (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. BS 970 EN43 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN49A is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN43 vs BS 970 EN49A is a 85.8% 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 85.8%.

Frequently Compared With BS 970 EN43:
EN 10083-1 51CrV4 IS 3195 113C6 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-3 51CrV4 EN 10083-1 51CrV4 IS 5517 55Cr3 IS 3431 50Cr4V2 IS 3195 52Cr4Mo2V EN 10089 55Cr3 BS 970 EN42B BS 970 EN42
Match Breakdown
CHEMISTRY MATCH
85.8%
MECHANICAL MATCH
No shared data
OVERALL
85.8%
Specifications
Property BS 970 EN43 BS 970 EN49A
Standard BS 970:1955 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.45-0.60 0.40-0.85
Si (%) 0.10-0.40 <=0.30
Mn (%) 0.60-0.80 <=1.00
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 EN43
Bars for water hardening and tempering. Laminated spring plates to conform to dimensional requirements of Appendix C.
BS 970 EN49A
Not documented
Can BS 970 EN43 Be Substituted With BS 970 EN49A?
BS 970 EN43 and BS 970 EN49A overlap closely enough on chemistry and mechanical properties that BS 970 EN49A is often considered as a substitute for BS 970 EN43 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
BS 970 EN43
0 active listings and RFQs →
BS 970 EN49A
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN43 and BS 970 EN49A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN43 be substituted with BS 970 EN49A?
BS 970 EN43 and BS 970 EN49A overlap closely enough on chemistry and mechanical properties that BS 970 EN49A is often considered as a substitute for BS 970 EN43 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.