Strong Match — 93.6% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 070M55 (BS 970 (Part 1):1983) and AISI 1050 are both steel grades.
Both fall under the Carbon Steel category.
BS 970 (Part 1) 070M55 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while AISI 1050 is commonly used for used for gears, shafts, hand tools, springs, agricultural implements, and machine components..
BS 970 (Part 1) 070M55 is defined under British Standards (BS), originating from United Kingdom, while AISI 1050 is defined under AISI, originating from United States.
As per chemical composition, BS 970 (Part 1) 070M55 vs AISI 1050 is a 93.6% 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 93.6%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
BS 970 (Part 1) 070M55
AISI 1050
Condition
Not specified
Hot Rolled
Tensile Strength
Not specified
590-660 MPa
Yield Strength
Not specified
310-380 MPa
Elongation
Not specified
15-20%
Hardness
Not specified
170-197 HB
Typical Applications
BS 970 (Part 1) 070M55
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
AISI 1050
Used for gears, shafts, hand tools, springs, agricultural implements, and machine components.
Can BS 970 (Part 1) 070M55 Be Substituted With AISI 1050?
BS 970 (Part 1) 070M55 and AISI 1050 overlap closely enough on chemistry and mechanical properties that AISI 1050 is often considered as a substitute for BS 970 (Part 1) 070M55 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 BS 970 (Part 1) 070M55 and AISI 1050?
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) 070M55 be substituted with AISI 1050?
BS 970 (Part 1) 070M55 and AISI 1050 overlap closely enough on chemistry and mechanical properties that AISI 1050 is often considered as a substitute for BS 970 (Part 1) 070M55 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.