Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10083-3 30CrNiMo8 (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 30CrNiMo8 is typically used for heavy duty forgings, turbine rotors, pressure vessels, while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
EN 10083-3 30CrNiMo8 is defined under European Standard (EN) (Europe).
As per chemical composition, EN 10083-3 30CrNiMo8 vs GOST 4543 12HN3A is a 56% 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 30CrNiMo8
GOST 4543 12HN3A
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Not specified
Elongation
9% min
11% min
Hardness
Soft annealed (+A): 248 HBW max
58-62 HRC (case)
Tensile Strength
1250 to 1450 MPa
850-1050 MPa
Yield Strength
1050 MPa min
685 MPa min
Typical Applications
EN 10083-3 30CrNiMo8
Heavy duty forgings, turbine rotors, pressure vessels
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
EN 10083-3 30CrNiMo8 specifies Mo, P, S which are not specified for GOST 4543 12HN3A.
Can EN 10083-3 30CrNiMo8 Be Substituted With GOST 4543 12HN3A?
EN 10083-3 30CrNiMo8 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 30CrNiMo8 and GOST 4543 12HN3A?
EN 10083-3 30CrNiMo8 specifies Mo, P, S which are not specified for GOST 4543 12HN3A.
Can EN 10083-3 30CrNiMo8 be substituted with GOST 4543 12HN3A?
EN 10083-3 30CrNiMo8 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.