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BS 970 (Part 3) 210M15 vs BS 970 (Part 1) 210A15

Strong Match — 92.7% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 210M15 (BS 970 (Part 3):1991) and BS 970 (Part 1) 210A15 (BS 970 (Part 1):1983) 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 (Part 1) 210A15 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties).. BS 970 (Part 3) 210M15 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 210A15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 3) 210M15 vs BS 970 (Part 1) 210A15 is a 92.7% 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 92.7%.

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
92.7%
MECHANICAL MATCH
No shared data
OVERALL
92.7%
Specifications
Property BS 970 (Part 3) 210M15 BS 970 (Part 1) 210A15
Standard BS 970 (Part 3):1991 BS 970 (Part 1):1983
Category Free Machining Steel Free Machining Steel
C (%) 0.12-0.18 0.13-0.18
Si (%) 0.10-0.40 Not specified
Mn (%) 0.90-1.30 0.90-1.20
P (%) <=0.05 <=0.050
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.
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 (Part 1) 210A15
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
Can BS 970 (Part 3) 210M15 Be Substituted With BS 970 (Part 1) 210A15?
BS 970 (Part 3) 210M15 and BS 970 (Part 1) 210A15 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 210A15 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 (Part 1) 210A15
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 210M15 and BS 970 (Part 1) 210A15?
BS 970 (Part 3) 210M15 specifies Si which is not specified for BS 970 (Part 1) 210A15.
Can BS 970 (Part 3) 210M15 be substituted with BS 970 (Part 1) 210A15?
BS 970 (Part 3) 210M15 and BS 970 (Part 1) 210A15 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 210A15 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.