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BS 970 (Part 1) 040A10 vs BS 970 (Part 1) 080A20

Strong Match — 85.7% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 040A10 (BS 970 (Part 1):1991) and BS 970 (Part 1) 080A20 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 1) 040A10 is typically used for used for bolts, studs, shafts, brackets, fabricated components, and general engineering parts., while BS 970 (Part 1) 080A20 is commonly used for used for nuts, bolts, hydraulic fittings, precision turned parts, sleeves, and couplings.. BS 970 (Part 1) 040A10 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 080A20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 040A10 vs BS 970 (Part 1) 080A20 is a 85.7% 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 85.7%.

Frequently Compared With BS 970 (Part 1) 040A10:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A62 BS 970 (Part 1) 070A67 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A78 BS 970 (Part 1) 060A81
Match Breakdown
CHEMISTRY MATCH
85.7%
MECHANICAL MATCH
No shared data
OVERALL
85.7%
Specifications
Property BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20
Standard BS 970 (Part 1):1991 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.08-0.13 0.18-0.23
Mn (%) 0.30-0.50 0.70-0.90
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 1) 040A10
Used for bolts, studs, shafts, brackets, fabricated components, and general engineering parts.
BS 970 (Part 1) 080A20
Used for nuts, bolts, hydraulic fittings, precision turned parts, sleeves, and couplings.
Can BS 970 (Part 1) 040A10 Be Substituted With BS 970 (Part 1) 080A20?
BS 970 (Part 1) 040A10 and BS 970 (Part 1) 080A20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 080A20 is often considered as a substitute for BS 970 (Part 1) 040A10 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 1) 040A10
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4700–5500 mm (185.04–216.54 in)
BS 970 (Part 1) 080A20
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4800–6600 mm (188.98–259.84 in)
On M-EX Right Now
BS 970 (Part 1) 040A10
2 active listings and RFQs →
BS 970 (Part 1) 080A20
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 040A10 and BS 970 (Part 1) 080A20?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 1) 040A10 be substituted with BS 970 (Part 1) 080A20?
BS 970 (Part 1) 040A10 and BS 970 (Part 1) 080A20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 080A20 is often considered as a substitute for BS 970 (Part 1) 040A10 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.