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AISI 1020 vs BS 970 (Part 1) 045M10

Related Material — 61% match based on chemical composition and mechanical property overlap.

AISI 1020 and BS 970 (Part 1) 045M10 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. AISI 1020 is typically used for shafts, pins, keys, lightly stressed parts, while BS 970 (Part 1) 045M10 is commonly used for case hardening steel (section four). AISI 1020 is defined under AISI, originating from United States, while BS 970 (Part 1) 045M10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, AISI 1020 vs BS 970 (Part 1) 045M10 is a 91.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 61%.

Frequently Compared With AISI 1020:
BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
91.4%
MECHANICAL MATCH
0%
OVERALL
61%
Specifications
Property AISI 1020 BS 970 (Part 1) 045M10
Standard AISI BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.18–0.23 0.07-0.13
Mn (%) 0.30–0.60 0.30-0.60
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 1020 BS 970 (Part 1) 045M10
Tensile Strength 420–560 MPa 430 MPa min
Elongation ≥23% 18 % min
Hardness ≤149 HB Not specified
Condition Not specified Case hardened, 19 mm test bar
Typical Applications
AISI 1020
Shafts, pins, keys, lightly stressed parts
BS 970 (Part 1) 045M10
Case hardening steel (section four)
Key Differences
Can AISI 1020 Be Substituted With BS 970 (Part 1) 045M10?
AISI 1020 and BS 970 (Part 1) 045M10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
Forms & Sizes Available on M-EX
AISI 1020
Round Bar → (3 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4700–6800 mm (185.04–267.72 in)
BS 970 (Part 1) 045M10
No active listings currently.
On M-EX Right Now
AISI 1020
3 active listings and RFQs →
BS 970 (Part 1) 045M10
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 1020 and BS 970 (Part 1) 045M10?
AISI 1020 specifies S, P which are not specified for BS 970 (Part 1) 045M10.
Can AISI 1020 be substituted with BS 970 (Part 1) 045M10?
AISI 1020 and BS 970 (Part 1) 045M10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.