Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10083-3 34Cr4 (EN 10083-3:2006) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
EN 10083-3 34Cr4 is typically used for used in high-tensile bolts, studs, shafts, and general engineering components., while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
EN 10083-3 34Cr4 is defined under European Standard (EN) (Europe).
As per chemical composition, EN 10083-3 34Cr4 vs GOST 4543 12HN3A is a 63.4% 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 10083-3 34Cr4
GOST 4543 12HN3A
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Not specified
Elongation
12% min
11% min
Hardness
Soft annealed (+A): 223 HBW max
58-62 HRC (case)
Tensile Strength
900 to 1100 MPa
850-1050 MPa
Yield Strength
700 MPa min
685 MPa min
Typical Applications
EN 10083-3 34Cr4
Used in high-tensile bolts, studs, shafts, and general engineering components.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
EN 10083-3 34Cr4 specifies P, S which are not specified for GOST 4543 12HN3A.
GOST 4543 12HN3A specifies Ni which is not specified for EN 10083-3 34Cr4.
Can EN 10083-3 34Cr4 Be Substituted With GOST 4543 12HN3A?
EN 10083-3 34Cr4 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 10083-3 34Cr4 and GOST 4543 12HN3A?
EN 10083-3 34Cr4 specifies P, S which are not specified for GOST 4543 12HN3A. GOST 4543 12HN3A specifies Ni which is not specified for EN 10083-3 34Cr4.
Can EN 10083-3 34Cr4 be substituted with GOST 4543 12HN3A?
EN 10083-3 34Cr4 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.