Close Alternative — 84.9% match
based on chemical composition and mechanical property overlap.
GOST 4543 40XH (GOST 4543-2016) and GOST 4543 40X (GOST 4543-2016) 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 GOST 4543 40X is commonly used for gears, shafts, axles, spindles, studs, automotive components.
As per chemical composition, GOST 4543 40XH vs GOST 4543 40X is a 82.9% match.
As per mechanical properties, the match is 94.6%.
Combined, this makes them a close alternative overall at 84.9%.
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
GOST 4543 40X
Tensile Strength
980-1180 MPa
980-1180 MPa
Yield Strength
>=785 MPa
>=785 MPa
Elongation
>=10%
>=10%
Hardness
241-285 HB
229-285 HB
Typical Applications
GOST 4543 40XH
heavy-duty gears, transmission shafts, axles, high-strength fasteners, forged machinery parts
Can GOST 4543 40XH Be Substituted With GOST 4543 40X?
GOST 4543 40XH and GOST 4543 40X 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 GOST 4543 40XH and GOST 4543 40X?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GOST 4543 40XH be substituted with GOST 4543 40X?
GOST 4543 40XH and GOST 4543 40X 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.