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NF A35-551 XC18 vs SAE J403 1018

Strong Match — 87.7% match based on chemical composition and mechanical property overlap.

NF A35-551 XC18 (NF A35-551:1986) and SAE J403 1018 (SAE J403:2014) 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 SAE J403 1018 is commonly used for chemistry-only grade; product scope as listed in the composition notes. NF A35-551 XC18 is defined under Association Francaise de Normalisation (NF), originating from France, while SAE J403 1018 is defined under SAE International, originating from United States.

As per chemical composition, NF A35-551 XC18 vs SAE J403 1018 is a 87.7% 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 87.7%.

Frequently Compared With NF A35-551 XC18:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 3) 070M20 BS 970 (Part 3) 080A15 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10
Match Breakdown
CHEMISTRY MATCH
87.7%
MECHANICAL MATCH
No shared data
OVERALL
87.7%
Specifications
Property NF A35-551 XC18 SAE J403 1018
Standard NF A35-551:1986 SAE J403:2014
Category Carbon Steel Carbon Steel
C (%) 0.15-0.21 0.15-0.20
Si (%) 0.10-0.35 Not specified
Mn (%) 0.40-0.70 0.60-0.90
P (%) 0.045 max <=0.030 (flat rolled), <=0.040 (long products)
S (%) 0.045 max <=0.035 (flat rolled), <=0.050 (long products)
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 SAE J403 1018
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.
SAE J403 1018
Chemistry-only grade; product scope as listed in the composition notes
Key Differences
Can NF A35-551 XC18 Be Substituted With SAE J403 1018?
NF A35-551 XC18 and SAE J403 1018 overlap closely enough on chemistry and mechanical properties that SAE J403 1018 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.
Forms & Sizes Available on M-EX
NF A35-551 XC18
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 6100–6800 mm (240.16–267.72 in)
SAE J403 1018
Round Bar → (6 listings)
Diameter: 3–14.2 mm (0.12–0.56 in)
Length: 3300–6300 mm (129.92–248.03 in)
On M-EX Right Now
NF A35-551 XC18
2 active listings and RFQs →
SAE J403 1018
6 active listings and RFQs →
Frequently Asked Questions
What is the difference between NF A35-551 XC18 and SAE J403 1018?
NF A35-551 XC18 specifies Si which is not specified for SAE J403 1018.
Can NF A35-551 XC18 be substituted with SAE J403 1018?
NF A35-551 XC18 and SAE J403 1018 overlap closely enough on chemistry and mechanical properties that SAE J403 1018 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.