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BS 970 EN4 vs BS 970 EN5C

Strong Match — 86.9% match based on chemical composition and mechanical property overlap.

BS 970 EN4 (BS 970:1955) and BS 970 EN5C (BS 970:1955) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN4 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars (excluding cold drawn bars). suitable for a tensile range of 28/38 tons/sq in., while BS 970 EN5C is commonly used for mechanical properties are not part of the contractual obligations of specifications en 5a, en 5b and en 5c.. BS 970 EN4 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN5C is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN4 vs BS 970 EN5C is a 86.9% 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 86.9%.

Frequently Compared With BS 970 EN4:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40 BS 970 (Part 1) 060A45 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 070M20
Match Breakdown
CHEMISTRY MATCH
86.9%
MECHANICAL MATCH
No shared data
OVERALL
86.9%
Specifications
Property BS 970 EN4 BS 970 EN5C
Standard BS 970:1955 BS 970:1955
Category Carbon Steel Carbon Steel
C (%) <=0.30 0.30-0.35
Si (%) 0.05-0.35 0.05-0.35
Mn (%) <=1.00 0.70-0.90
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 EN4 BS 970 EN5C
Tensile Strength 432-587 MPa (28-38 tons/sq in, converted) Not specified
Elongation ≥25% Not specified
Hardness 126-179 HB Not specified
Condition ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN4
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars (excluding cold drawn bars). Suitable for a tensile range of 28/38 tons/sq in.
BS 970 EN5C
Mechanical properties are not part of the contractual obligations of specifications En 5A, En 5B and En 5C.
Can BS 970 EN4 Be Substituted With BS 970 EN5C?
BS 970 EN4 and BS 970 EN5C overlap closely enough on chemistry and mechanical properties that BS 970 EN5C is often considered as a substitute for BS 970 EN4 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 EN4
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BS 970 EN5C
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Frequently Asked Questions
What is the difference between BS 970 EN4 and BS 970 EN5C?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN4 be substituted with BS 970 EN5C?
BS 970 EN4 and BS 970 EN5C overlap closely enough on chemistry and mechanical properties that BS 970 EN5C is often considered as a substitute for BS 970 EN4 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.