Strong Match — 91.4% match
based on chemical composition and mechanical property overlap.
AISI 1020 and BS 970 (Part 1) 045A10 (BS 970 (Part 1):1983) 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) 045A10 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)..
AISI 1020 is defined under AISI, originating from United States, while BS 970 (Part 1) 045A10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, AISI 1020 vs BS 970 (Part 1) 045A10 is a 91.4% 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 91.4%.
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) 045A10
Tensile Strength
420–560 MPa
Not specified
Elongation
≥23%
Not specified
Hardness
≤149 HB
Not specified
Typical Applications
AISI 1020
Shafts, pins, keys, lightly stressed parts
BS 970 (Part 1) 045A10
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Can AISI 1020 Be Substituted With BS 970 (Part 1) 045A10?
AISI 1020 and BS 970 (Part 1) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 045A10 is often considered as a substitute for AISI 1020 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between AISI 1020 and BS 970 (Part 1) 045A10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AISI 1020 be substituted with BS 970 (Part 1) 045A10?
AISI 1020 and BS 970 (Part 1) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 045A10 is often considered as a substitute for AISI 1020 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.