Close Alternative — 82% match
based on chemical composition and mechanical property overlap.
EN 10083-3 25CrMoS4 (EN 10083-3:2006) and NF A35-552 42CD4 (NF A35-552:1986) are both steel grades.
Both fall under the Alloy Steel category.
EN 10083-3 25CrMoS4 is typically used for quenched and tempered, flame or induction hardened machine parts (clause 1), while NF A35-552 42CD4 is commonly used for gears, shafts, crankshafts, high tensile fasteners.
EN 10083-3 25CrMoS4 is defined under European Standard (EN), originating from Europe, while NF A35-552 42CD4 is defined under Association Francaise de Normalisation (NF), originating from France.
As per chemical composition, EN 10083-3 25CrMoS4 vs NF A35-552 42CD4 is a 85.4% match.
As per mechanical properties, the match is 75%.
Combined, this makes them a close alternative overall at 82%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-3 25CrMoS4
NF A35-552 42CD4
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Not specified
Elongation
12% min
≥12%
Hardness
Soft annealed (+A): 212 HBW max
263–313 HB
Tensile Strength
900 to 1100 MPa
900–1100 MPa
Yield Strength
700 MPa min
≥700 MPa
Typical Applications
EN 10083-3 25CrMoS4
Quenched and tempered, flame or induction hardened machine parts (clause 1)
NF A35-552 42CD4
Gears, shafts, crankshafts, high tensile fasteners
Key Differences
EN 10083-3 25CrMoS4 specifies P, S which are not specified for NF A35-552 42CD4.
Can EN 10083-3 25CrMoS4 Be Substituted With NF A35-552 42CD4?
EN 10083-3 25CrMoS4 and NF A35-552 42CD4 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between EN 10083-3 25CrMoS4 and NF A35-552 42CD4?
EN 10083-3 25CrMoS4 specifies P, S which are not specified for NF A35-552 42CD4.
Can EN 10083-3 25CrMoS4 be substituted with NF A35-552 42CD4?
EN 10083-3 25CrMoS4 and NF A35-552 42CD4 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.