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BS 970 EN43C vs BS 970 EN43A

Strong Match — 95.7% match based on chemical composition and mechanical property overlap.

BS 970 EN43C (BS 970:1955) and BS 970 EN43A (BS 970:1955) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN43C is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN43A is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN43C vs BS 970 EN43A is a 95.7% 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 95.7%.

Frequently Compared With BS 970 EN43C:
BS 970 (Part 1) 040A12 BS 970 (Part 1) 060A45 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
95.7%
MECHANICAL MATCH
No shared data
OVERALL
95.7%
Specifications
Property BS 970 EN43C BS 970 EN43A
Standard BS 970:1955 BS 970:1955
Category Carbon Steel Carbon Steel
C (%) 0.50-0.55 0.45-0.55
Si (%) 0.05-0.35 0.05-0.35
Mn (%) 0.70-1.00 0.70-1.00
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 EN43C BS 970 EN43A
Tensile Strength Not specified ≥618 MPa (40 tons/sq in, converted)
Yield Strength Not specified ≥324 MPa (21 tons/sq in, converted)
Elongation Not specified ≥18%
Hardness Not specified 179-229 HB
Condition Not specified Normalised, ruling section 1 1/8 in (lowest-strength condition of the standard)
Typical Applications
BS 970 EN43C
Not documented
BS 970 EN43A
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable hardened and tempered for 45/55 (R) and 50/60 (S) tons/sq in according to ruling section; purchaser to state normalised, cold drawn or hardened and tempered R or S. En 43A to 43E.
Can BS 970 EN43C Be Substituted With BS 970 EN43A?
BS 970 EN43C and BS 970 EN43A overlap closely enough on chemistry and mechanical properties that BS 970 EN43A is often considered as a substitute for BS 970 EN43C 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 EN43C
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BS 970 EN43A
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Frequently Asked Questions
What is the difference between BS 970 EN43C and BS 970 EN43A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN43C be substituted with BS 970 EN43A?
BS 970 EN43C and BS 970 EN43A overlap closely enough on chemistry and mechanical properties that BS 970 EN43A is often considered as a substitute for BS 970 EN43C in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.