Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
GOST 4543 40XH (GOST 4543-2016) and NF A35-565 100C6 are both steel grades.
Both fall under the Alloy Steel category.
GOST 4543 40XH is typically used for heavy-duty gears, transmission shafts, axles, high-strength fasteners, forged machinery parts, while NF A35-565 100C6 is commonly used for ball bearings, roller bearings, bearing races, rollers, precision tools, wear resistant parts.
NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF) (France).
As per chemical composition, GOST 4543 40XH vs NF A35-565 100C6 is a 63.7% match.
As per mechanical properties, the match is 18.2%.
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
GOST 4543 40XH
NF A35-565 100C6
Tensile Strength
980-1180 MPa
850-1100 MPa
Yield Strength
>=785 MPa
Not specified
Elongation
>=10%
Not specified
Hardness
241-285 HB
60-66 HRC
Typical Applications
GOST 4543 40XH
heavy-duty gears, transmission shafts, axles, high-strength fasteners, forged machinery parts
GOST 4543 40XH specifies Ni, Cu which are not specified for NF A35-565 100C6.
Can GOST 4543 40XH Be Substituted With NF A35-565 100C6?
GOST 4543 40XH 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 GOST 4543 40XH and NF A35-565 100C6?
GOST 4543 40XH specifies Ni, Cu which are not specified for NF A35-565 100C6.
Can GOST 4543 40XH be substituted with NF A35-565 100C6?
GOST 4543 40XH 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.