Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
SAE J404 4120 (SAE J404:2000) and NF A35-565 100C6 are both steel grades.
Both fall under the Alloy Steel category.
SAE J404 4120 is typically used for chemistry-only alloy steel grade; see the composition notes for product scope, while NF A35-565 100C6 is commonly used for ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts.
SAE J404 4120 is defined under SAE International, originating from United States, while NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF), originating from France.
As per chemical composition, SAE J404 4120 vs NF A35-565 100C6 is a 67.2% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
SAE J404 4120
NF A35-565 100C6
Tensile Strength
Not specified
850-1100 MPa
Hardness
Not specified
60-66 HRC
Typical Applications
SAE J404 4120
Chemistry-only alloy steel grade; see the composition notes for product scope
SAE J404 4120 specifies Mo which is not specified for NF A35-565 100C6.
Can SAE J404 4120 Be Substituted With NF A35-565 100C6?
SAE J404 4120 and NF A35-565 100C6 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between SAE J404 4120 and NF A35-565 100C6?
SAE J404 4120 specifies Mo which is not specified for NF A35-565 100C6.
Can SAE J404 4120 be substituted with NF A35-565 100C6?
SAE J404 4120 and NF A35-565 100C6 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.