Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
DIN 17200 30CrMo4 (DIN 17200:1986) and GOST 4543 12HN3A (GOST 4543-2016) are both steel grades.
Both fall under the Alloy Steel category.
DIN 17200 30CrMo4 is typically used for high tensile tubes, pressure vessels, aircraft structures, while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components..
DIN 17200 30CrMo4 is defined under Deutsches Institut fur Normung (DIN) (Germany).
As per chemical composition, DIN 17200 30CrMo4 vs GOST 4543 12HN3A is a 61.7% 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
DIN 17200 30CrMo4
GOST 4543 12HN3A
Tensile Strength
700–850 MPa
850-1050 MPa
Yield Strength
≥520 MPa
685 MPa min
Elongation
≥16%
11% min
Hardness
197–255 HB
58-62 HRC (case)
Typical Applications
DIN 17200 30CrMo4
High tensile tubes, pressure vessels, aircraft structures
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
DIN 17200 30CrMo4 specifies Mo, P, S which are not specified for GOST 4543 12HN3A.
GOST 4543 12HN3A specifies Ni which is not specified for DIN 17200 30CrMo4.
Can DIN 17200 30CrMo4 Be Substituted With GOST 4543 12HN3A?
DIN 17200 30CrMo4 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 DIN 17200 30CrMo4 and GOST 4543 12HN3A?
DIN 17200 30CrMo4 specifies Mo, P, S which are not specified for GOST 4543 12HN3A. GOST 4543 12HN3A specifies Ni which is not specified for DIN 17200 30CrMo4.
Can DIN 17200 30CrMo4 be substituted with GOST 4543 12HN3A?
DIN 17200 30CrMo4 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.