Close Alternative — 74.2% match
based on chemical composition and mechanical property overlap.
GOST 4543 15H2NM (GOST 4543-2016) and GOST 4543 20HN2M (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
GOST 4543 15H2NM is typically used for used for heavy-duty gears, shafts, couplings, bearings, and transmission parts., while GOST 4543 20HN2M is commonly used for used for gears, pinions, shafts, rollers, and automotive transmission parts..
As per chemical composition, GOST 4543 15H2NM vs GOST 4543 20HN2M is a 76.1% match.
As per mechanical properties, the match is 70.5%.
Combined, this makes them a close alternative overall at 74.2%.
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 15H2NM
GOST 4543 20HN2M
Tensile Strength
900-1100 MPa
880-1080 MPa
Yield Strength
735 MPa min
735 MPa min
Elongation
10% min
11% min
Hardness
58-62 HRC (case)
58-62 HRC (case)
Typical Applications
GOST 4543 15H2NM
Used for heavy-duty gears, shafts, couplings, bearings, and transmission parts.
GOST 4543 20HN2M
Used for gears, pinions, shafts, rollers, and automotive transmission parts.
Can GOST 4543 15H2NM Be Substituted With GOST 4543 20HN2M?
GOST 4543 15H2NM and GOST 4543 20HN2M 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 15H2NM and GOST 4543 20HN2M?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GOST 4543 15H2NM be substituted with GOST 4543 20HN2M?
GOST 4543 15H2NM and GOST 4543 20HN2M 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.