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BS 970 EN43D vs BS 970 EN9

Strong Match — 87.1% match based on chemical composition and mechanical property overlap.

BS 970 EN43D (BS 970:1955) and BS 970 EN9 (BS 970:1955) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN43D is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN9 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN43D vs BS 970 EN9 is a 87.1% 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 87.1%.

Frequently Compared With BS 970 EN43D:
BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A40 BS 970 (Part 1) 060A45 BS 970 (Part 1) 060A62 BS 970 (Part 1) 040A12
Match Breakdown
CHEMISTRY MATCH
87.1%
MECHANICAL MATCH
No shared data
OVERALL
87.1%
Specifications
Property BS 970 EN43D BS 970 EN9
Standard BS 970:1955 BS 970:1955
Category Carbon Steel Carbon Steel
C (%) 0.60-0.65 0.50-0.60
Si (%) 0.05-0.35 0.05-0.35
Mn (%) 0.40-0.60 0.50-0.80
S (%) <=0.060 <=0.060
P (%) <=0.060 <=0.060
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 EN43D BS 970 EN9
Tensile Strength Not specified ≥695 MPa (45 tons/sq in, converted)
Yield Strength Not specified ≥355 MPa (23 tons/sq in, converted)
Elongation Not specified ≥18%
Hardness Not specified 201-255 HB
Condition Not specified Normalised, ruling section 4 in (lowest-strength condition of the standard)
Typical Applications
BS 970 EN43D
Not documented
BS 970 EN9
Springs, chisels, punches, dies
Can BS 970 EN43D Be Substituted With BS 970 EN9?
BS 970 EN43D and BS 970 EN9 overlap closely enough on chemistry and mechanical properties that BS 970 EN9 is often considered as a substitute for BS 970 EN43D 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 EN43D
No active listings currently.
BS 970 EN9
Round Bar → (3 listings)
Diameter: 70–70 mm (2.76–2.76 in)
Length: 5600–6900 mm (220.47–271.65 in)
On M-EX Right Now
BS 970 EN43D
0 active listings and RFQs →
BS 970 EN9
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN43D and BS 970 EN9?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN43D be substituted with BS 970 EN9?
BS 970 EN43D and BS 970 EN9 overlap closely enough on chemistry and mechanical properties that BS 970 EN9 is often considered as a substitute for BS 970 EN43D in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.