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AISI 1015 vs BS 970 (Part 1) 040A12

Strong Match — 91.7% match based on chemical composition and mechanical property overlap.

AISI 1015 and BS 970 (Part 1) 040A12 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. AISI 1015 is typically used for case hardened pins, bushes, light gears, while BS 970 (Part 1) 040A12 is commonly used for as-rolled, or as-rolled and softened, steel (section two). AISI 1015 is defined under AISI, originating from United States, while BS 970 (Part 1) 040A12 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, AISI 1015 vs BS 970 (Part 1) 040A12 is a 91.7% 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 91.7%.

Frequently Compared With AISI 1015:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 080A15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
91.7%
MECHANICAL MATCH
No shared data
OVERALL
91.7%
Specifications
Property AISI 1015 BS 970 (Part 1) 040A12
Standard AISI BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.13–0.18 0.10-0.15
Mn (%) 0.30–0.60 0.30-0.50
S (%) ≤0.050 Not specified
P (%) ≤0.030 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 1015 BS 970 (Part 1) 040A12
Tensile Strength 380–530 MPa Not specified
Elongation ≥22% Not specified
Hardness ≤131 HB Not specified
Typical Applications
AISI 1015
Case hardened pins, bushes, light gears
BS 970 (Part 1) 040A12
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can AISI 1015 Be Substituted With BS 970 (Part 1) 040A12?
AISI 1015 and BS 970 (Part 1) 040A12 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A12 is often considered as a substitute for AISI 1015 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
AISI 1015
Round Bar → (3 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6100–6500 mm (240.16–255.91 in)
BS 970 (Part 1) 040A12
No active listings currently.
On M-EX Right Now
AISI 1015
3 active listings and RFQs →
BS 970 (Part 1) 040A12
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 1015 and BS 970 (Part 1) 040A12?
AISI 1015 specifies S, P which are not specified for BS 970 (Part 1) 040A12.
Can AISI 1015 be substituted with BS 970 (Part 1) 040A12?
AISI 1015 and BS 970 (Part 1) 040A12 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A12 is often considered as a substitute for AISI 1015 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.