Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
GOST 801 ShKh15 (GOST 801-1978) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
GOST 801 ShKh15 is typically used for used for ball bearings, roller bearings, races, bearing rings, and precision rollers., while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
As per chemical composition, GOST 801 ShKh15 vs GOST 4543 12HN3A is a 71.4% match.
As per mechanical properties, the match is 14.6%.
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 801 ShKh15
GOST 4543 12HN3A
Tensile Strength
750-950 MPa
850-1050 MPa
Yield Strength
450 MPa min
685 MPa min
Elongation
8% min
11% min
Hardness
60-66 HRC
58-62 HRC (case)
Typical Applications
GOST 801 ShKh15
Used for ball bearings, roller bearings, races, bearing rings, and precision rollers.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
GOST 4543 12HN3A specifies Ni which is not specified for GOST 801 ShKh15.
Can GOST 801 ShKh15 Be Substituted With GOST 4543 12HN3A?
GOST 801 ShKh15 and GOST 4543 12HN3A 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 801 ShKh15 and GOST 4543 12HN3A?
GOST 4543 12HN3A specifies Ni which is not specified for GOST 801 ShKh15.
Can GOST 801 ShKh15 be substituted with GOST 4543 12HN3A?
GOST 801 ShKh15 and GOST 4543 12HN3A 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.