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BS 970 (Part 3) 080M40 vs BS 970 (Part 1) 080M40

Strong Match — 94.3% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 080M40 (BS 970 (Part 3):1991) and BS 970 (Part 1) 080M40 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 3) 080M40 is typically used for shafts, gears, axles, general engineering, while BS 970 (Part 1) 080M40 is commonly used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6.. BS 970 (Part 3) 080M40 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 080M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 3) 080M40 vs BS 970 (Part 1) 080M40 is a 94.3% 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 94.3%.

Frequently Compared With BS 970 (Part 3) 080M40:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
94.3%
MECHANICAL MATCH
No shared data
OVERALL
94.3%
Specifications
Property BS 970 (Part 3) 080M40 BS 970 (Part 1) 080M40
Standard BS 970 (Part 3):1991 BS 970 (Part 1):1983
Category Carbon Steel Carbon Steel
C (%) 0.36-0.44 0.36-0.44
Si (%) 0.10-0.40 Not specified
Mn (%) 0.60-1.00 0.60-1.00
P (%) <=0.05 <=0.050
S (%) <=0.05 <=0.050
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) 080M40
Shafts, gears, axles, general engineering
BS 970 (Part 1) 080M40
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
Key Differences
Can BS 970 (Part 3) 080M40 Be Substituted With BS 970 (Part 1) 080M40?
BS 970 (Part 3) 080M40 and BS 970 (Part 1) 080M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 080M40 is often considered as a substitute for BS 970 (Part 3) 080M40 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
BS 970 (Part 3) 080M40
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6000–6900 mm (236.22–271.65 in)
BS 970 (Part 1) 080M40
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On M-EX Right Now
BS 970 (Part 3) 080M40
2 active listings and RFQs →
BS 970 (Part 1) 080M40
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 080M40 and BS 970 (Part 1) 080M40?
BS 970 (Part 3) 080M40 specifies Si which is not specified for BS 970 (Part 1) 080M40.
Can BS 970 (Part 3) 080M40 be substituted with BS 970 (Part 1) 080M40?
BS 970 (Part 3) 080M40 and BS 970 (Part 1) 080M40 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 080M40 is often considered as a substitute for BS 970 (Part 3) 080M40 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.