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BS 970 (Part 3) 210M15 vs BS 970 EN7A

Strong Match — 93.7% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 210M15 (BS 970 (Part 3):1991) and BS 970 EN7A (BS 970:1955) are both steel grades. Both fall under the Free Machining Steel category. BS 970 (Part 3) 210M15 is typically 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), while BS 970 EN7A is commonly used for bright bars for machining. BS 970 (Part 3) 210M15 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN7A is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 3) 210M15 vs BS 970 EN7A is a 93.7% 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 93.7%.

Frequently Compared With BS 970 (Part 3) 210M15:
IS 1570 (Part 3) 10C8S10 IS 4432 10C8S10 SAE J403 1117 SAE J403 1126 SAE J403 1126 SAE J403 1132 SAE J403 1117 SAE J403 1117 SAE J403 1118 SAE J403 1118 SAE J403 1118 SAE J403 1126
Match Breakdown
CHEMISTRY MATCH
93.7%
MECHANICAL MATCH
No shared data
OVERALL
93.7%
Specifications
Property BS 970 (Part 3) 210M15 BS 970 EN7A
Standard BS 970 (Part 3):1991 BS 970:1955
Category Free Machining Steel Free Machining Steel
C (%) 0.12-0.18 0.12-0.18
Si (%) 0.10-0.40 <=0.25
Mn (%) 0.90-1.30 1.00-1.50
P (%) <=0.05 <=0.060
S (%) 0.10-0.18 0.10-0.18
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 (Part 3) 210M15 BS 970 EN7A
Tensile Strength Not specified ≥432 MPa (28 tons/sq in, converted)
Elongation Not specified ≥25%
Condition Not specified Hot rolled or normalised, ruling section 6 in (lowest-strength condition of the standard)
Typical Applications
BS 970 (Part 3) 210M15
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 EN7A
Bright bars for machining
Can BS 970 (Part 3) 210M15 Be Substituted With BS 970 EN7A?
BS 970 (Part 3) 210M15 and BS 970 EN7A overlap closely enough on chemistry and mechanical properties that BS 970 EN7A is often considered as a substitute for BS 970 (Part 3) 210M15 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 (Part 3) 210M15
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BS 970 EN7A
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 210M15 and BS 970 EN7A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 210M15 be substituted with BS 970 EN7A?
BS 970 (Part 3) 210M15 and BS 970 EN7A overlap closely enough on chemistry and mechanical properties that BS 970 EN7A is often considered as a substitute for BS 970 (Part 3) 210M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.