Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10085 41CrAlMo7 (EN 10085:2001) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
EN 10085 41CrAlMo7 is typically used for nitrided precision components, crankshafts, gears, while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
EN 10085 41CrAlMo7 is defined under European Standard (EN) (Europe).
As per chemical composition, EN 10085 41CrAlMo7 vs GOST 4543 12HN3A is a 54.3% match.
As per mechanical properties, the match is 0%.
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
EN 10085 41CrAlMo7
GOST 4543 12HN3A
Tensile Strength
850–1000 MPa
850-1050 MPa
Surface Hardness HV
≥900 (nitrided)
Not specified
Core Hardness HB
248–302
Not specified
Yield Strength
Not specified
685 MPa min
Elongation
Not specified
11% min
Hardness
Not specified
58-62 HRC (case)
Typical Applications
EN 10085 41CrAlMo7
Nitrided precision components, crankshafts, gears
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
EN 10085 41CrAlMo7 specifies Mo, Al which are not specified for GOST 4543 12HN3A.
GOST 4543 12HN3A specifies Ni, Si which are not specified for EN 10085 41CrAlMo7.
Can EN 10085 41CrAlMo7 Be Substituted With GOST 4543 12HN3A?
EN 10085 41CrAlMo7 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 EN 10085 41CrAlMo7 and GOST 4543 12HN3A?
EN 10085 41CrAlMo7 specifies Mo, Al which are not specified for GOST 4543 12HN3A. GOST 4543 12HN3A specifies Ni, Si which are not specified for EN 10085 41CrAlMo7.
Can EN 10085 41CrAlMo7 be substituted with GOST 4543 12HN3A?
EN 10085 41CrAlMo7 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.