Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
GOST 4543 35HM (GOST 4543-2016) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
GOST 4543 35HM is typically used for used for shafts, gears, connecting rods, bolts, and pressure equipment parts., while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
As per chemical composition, GOST 4543 35HM vs GOST 4543 12HN3A is a 61.1% match.
As per mechanical properties, the match is 43.8%.
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 35HM
GOST 4543 12HN3A
Tensile Strength
850-1000 MPa
850-1050 MPa
Yield Strength
685 MPa min
685 MPa min
Elongation
12% min
11% min
Hardness
241-302 HB
58-62 HRC (case)
Typical Applications
GOST 4543 35HM
Used for shafts, gears, connecting rods, bolts, and pressure equipment parts.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
GOST 4543 35HM specifies Mo which is not specified for GOST 4543 12HN3A.
GOST 4543 12HN3A specifies Ni which is not specified for GOST 4543 35HM.
Can GOST 4543 35HM Be Substituted With GOST 4543 12HN3A?
GOST 4543 35HM 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 4543 35HM and GOST 4543 12HN3A?
GOST 4543 35HM specifies Mo which is not specified for GOST 4543 12HN3A. GOST 4543 12HN3A specifies Ni which is not specified for GOST 4543 35HM.
Can GOST 4543 35HM be substituted with GOST 4543 12HN3A?
GOST 4543 35HM 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.