Strong Match — 87% match
based on chemical composition and mechanical property overlap.
NF A35-551 XC18 (NF A35-551:1986) and BS 970 (Part 3) 045A10 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Carbon Steel category.
NF A35-551 XC18 is typically used for used for shafts, pins, forged parts, welded structures, machine components, and low-stress fittings., while BS 970 (Part 3) 045A10 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (table 14).
NF A35-551 XC18 is defined under Association Francaise de Normalisation (NF), originating from France, while BS 970 (Part 3) 045A10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, NF A35-551 XC18 vs BS 970 (Part 3) 045A10 is a 87% 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 87%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
NF A35-551 XC18
BS 970 (Part 3) 045A10
Tensile Strength
370-500 MPa
Not specified
Yield Strength
220-300 MPa
Not specified
Elongation
26-32%
Not specified
Hardness
110-150 HB
Not specified
Typical Applications
NF A35-551 XC18
Used for shafts, pins, forged parts, welded structures, machine components, and low-stress fittings.
BS 970 (Part 3) 045A10
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (Table 14)
Can NF A35-551 XC18 Be Substituted With BS 970 (Part 3) 045A10?
NF A35-551 XC18 and BS 970 (Part 3) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 045A10 is often considered as a substitute for NF A35-551 XC18 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 NF A35-551 XC18 and BS 970 (Part 3) 045A10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can NF A35-551 XC18 be substituted with BS 970 (Part 3) 045A10?
NF A35-551 XC18 and BS 970 (Part 3) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 045A10 is often considered as a substitute for NF A35-551 XC18 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.