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BS 970 EN46 vs BS 970 EN45

Strong Match — 91.7% match based on chemical composition and mechanical property overlap.

BS 970 EN46 (BS 970:1955) and BS 970 EN45 (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. BS 970 EN46 is typically used for bars for water hardening and tempering. laminated spring plates to this specification shall conform to the dimensional requirements in appendix c., while BS 970 EN45 is commonly used for leaf springs, coil springs, automotive suspension. BS 970 EN46 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN45 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN46 vs BS 970 EN45 is a 91.7% 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 91.7%.

Frequently Compared With BS 970 EN46:
IS 3431 55Si7 EN 10089 55Si7 IS 4367 55Si7 IS 3431 50Cr4V2 IS 1570 (Part 4) 55Si7 IS 3195 113C6 IS 3195 50Cr4V2 EN 10083-1 51CrV4 EN 10083-3 51CrV4 IS 3195 52Cr4Mo2V IS 5517 55Cr3 IS 3195 55Si7
Match Breakdown
CHEMISTRY MATCH
91.7%
MECHANICAL MATCH
No shared data
OVERALL
91.7%
Specifications
Property BS 970 EN46 BS 970 EN45
Standard BS 970:1955 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.35-0.45 0.50-0.60
Si (%) 1.50-2.00 1.50-2.00
Mn (%) 0.70-1.00 0.70-1.00
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 EN46
Bars for water hardening and tempering. Laminated spring plates to this specification shall conform to the dimensional requirements in Appendix C.
BS 970 EN45
Leaf springs, coil springs, automotive suspension
Can BS 970 EN46 Be Substituted With BS 970 EN45?
BS 970 EN46 and BS 970 EN45 overlap closely enough on chemistry and mechanical properties that BS 970 EN45 is often considered as a substitute for BS 970 EN46 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 970 EN46
No active listings currently.
BS 970 EN45
Round Bar → (6 listings)
Diameter: 55–60 mm (2.17–2.36 in)
Length: 5200–6200 mm (204.72–244.09 in)
Flat Bar → (3 listings)
Thickness: 25–25 mm (0.98–0.98 in)
Width: 150–150 mm (5.91–5.91 in)
Length: 2500–3600 mm (98.43–141.73 in)
On M-EX Right Now
BS 970 EN46
0 active listings and RFQs →
BS 970 EN45
9 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN46 and BS 970 EN45?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN46 be substituted with BS 970 EN45?
BS 970 EN46 and BS 970 EN45 overlap closely enough on chemistry and mechanical properties that BS 970 EN45 is often considered as a substitute for BS 970 EN46 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.