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

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

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

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