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BS 970 EN43B vs NF A35-552 XC48

Strong Match — 90.6% match based on chemical composition and mechanical property overlap.

BS 970 EN43B (BS 970:1955) and NF A35-552 XC48 (NF A35-552:1986) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN43B is defined under British Standards (BS), originating from United Kingdom, while NF A35-552 XC48 is defined under Association Francaise de Normalisation (NF), originating from France.

As per chemical composition, BS 970 EN43B vs NF A35-552 XC48 is a 90.6% 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 90.6%.

Frequently Compared With BS 970 EN43B:
BS 970 (Part 1) 060A40 BS 970 (Part 1) 060A45 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
90.6%
MECHANICAL MATCH
No shared data
OVERALL
90.6%
Specifications
Property BS 970 EN43B NF A35-552 XC48
Standard BS 970:1955 NF A35-552:1986
Category Carbon Steel Carbon Steel
C (%) 0.45-0.50 0.45-0.52
Si (%) 0.05-0.35 0.10-0.35
Mn (%) 0.70-1.00 0.50-0.80
S (%) <=0.060 0.045 max
P (%) <=0.060 0.045 max
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 EN43B NF A35-552 XC48
Tensile Strength Not specified 700-850 MPa
Yield Strength Not specified 400-550 MPa
Elongation Not specified 14-20%
Hardness Not specified 190-255 HB
Typical Applications
BS 970 EN43B
Not documented
NF A35-552 XC48
Used for gears, axles, rollers, machine spindles, hand tools, and wear-resistant parts.
Can BS 970 EN43B Be Substituted With NF A35-552 XC48?
BS 970 EN43B and NF A35-552 XC48 overlap closely enough on chemistry and mechanical properties that NF A35-552 XC48 is often considered as a substitute for BS 970 EN43B 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
BS 970 EN43B
No active listings currently.
NF A35-552 XC48
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6300–7000 mm (248.03–275.59 in)
On M-EX Right Now
BS 970 EN43B
0 active listings and RFQs →
NF A35-552 XC48
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN43B and NF A35-552 XC48?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN43B be substituted with NF A35-552 XC48?
BS 970 EN43B and NF A35-552 XC48 overlap closely enough on chemistry and mechanical properties that NF A35-552 XC48 is often considered as a substitute for BS 970 EN43B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.