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NF A35-552 XC40 vs BS 970 (Part 3) 080A42

Strong Match — 89.9% match based on chemical composition and mechanical property overlap.

NF A35-552 XC40 (NF A35-552:1986) and BS 970 (Part 3) 080A42 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Carbon Steel category. NF A35-552 XC40 is typically used for used for gears, shafts, crankshafts, couplings, machinery parts, and forged components., while BS 970 (Part 3) 080A42 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; carbon and carbon manganese steel (table 13). NF A35-552 XC40 is defined under Association Francaise de Normalisation (NF), originating from France, while BS 970 (Part 3) 080A42 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, NF A35-552 XC40 vs BS 970 (Part 3) 080A42 is a 89.9% 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 89.9%.

Frequently Compared With NF A35-552 XC40:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A40 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10
Match Breakdown
CHEMISTRY MATCH
89.9%
MECHANICAL MATCH
No shared data
OVERALL
89.9%
Specifications
Property NF A35-552 XC40 BS 970 (Part 3) 080A42
Standard NF A35-552:1986 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.37-0.44 0.40-0.45
Si (%) 0.10-0.35 0.10-0.40
Mn (%) 0.50-0.80 0.70-0.90
P (%) 0.045 max <=0.05
S (%) 0.045 max <=0.05
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property NF A35-552 XC40 BS 970 (Part 3) 080A42
Tensile Strength 620-780 MPa Not specified
Yield Strength 350-480 MPa Not specified
Elongation 16-22% Not specified
Hardness 180-230 HB Not specified
Typical Applications
NF A35-552 XC40
Used for gears, shafts, crankshafts, couplings, machinery parts, and forged components.
BS 970 (Part 3) 080A42
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; carbon and carbon manganese steel (Table 13)
Can NF A35-552 XC40 Be Substituted With BS 970 (Part 3) 080A42?
NF A35-552 XC40 and BS 970 (Part 3) 080A42 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 080A42 is often considered as a substitute for NF A35-552 XC40 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
NF A35-552 XC40
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5000–5700 mm (196.85–224.41 in)
BS 970 (Part 3) 080A42
No active listings currently.
On M-EX Right Now
NF A35-552 XC40
2 active listings and RFQs →
BS 970 (Part 3) 080A42
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between NF A35-552 XC40 and BS 970 (Part 3) 080A42?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can NF A35-552 XC40 be substituted with BS 970 (Part 3) 080A42?
NF A35-552 XC40 and BS 970 (Part 3) 080A42 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 080A42 is often considered as a substitute for NF A35-552 XC40 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.