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BS 970 EN201 vs BS 970 (Part 3) 045M10

Close Alternative — 84.9% match based on chemical composition and mechanical property overlap.

BS 970 EN201 (BS 970:1955) and BS 970 (Part 3) 045M10 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN201 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength of 40 tons/sq in min., while BS 970 (Part 3) 045M10 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (table 14). BS 970 EN201 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 045M10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN201 vs BS 970 (Part 3) 045M10 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 close alternative overall at 84.9%.

Frequently Compared With BS 970 EN201:
BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 060A32 BS 970 (Part 3) 080A15 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A40
Match Breakdown
CHEMISTRY MATCH
86.9%
MECHANICAL MATCH
No shared data
OVERALL
84.9%
Specifications
Property BS 970 EN201 BS 970 (Part 3) 045M10
Standard BS 970:1955 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) <=0.18 0.07-0.13
Si (%) 0.05-0.35 0.10-0.40
Mn (%) 1.10-1.50 0.30-0.60
S (%) <=0.050 <=0.05
P (%) <=0.050 <=0.05
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 EN201 BS 970 (Part 3) 045M10
Tensile Strength ≥618 MPa (40 tons/sq in, converted) Not specified
Elongation ≥20% Not specified
Condition Core, after heat treatment (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN201
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 40 tons/sq in min.
BS 970 (Part 3) 045M10
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (Table 14)
Can BS 970 EN201 Be Substituted With BS 970 (Part 3) 045M10?
BS 970 EN201 and BS 970 (Part 3) 045M10 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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BS 970 EN201
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BS 970 (Part 3) 045M10
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Frequently Asked Questions
What is the difference between BS 970 EN201 and BS 970 (Part 3) 045M10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN201 be substituted with BS 970 (Part 3) 045M10?
BS 970 EN201 and BS 970 (Part 3) 045M10 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.