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GOST 4543 12HN3A vs GB/T 3077 12Cr2Ni4A

Related Material — 61.8% match based on chemical composition and mechanical property overlap.

GOST 4543 12HN3A (GOST 4543-2016) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. GOST 4543 12HN3A is typically used for used for gears, pinions, crankshafts, aircraft parts, and transmission components., while GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. GB/T 3077 12Cr2Ni4A is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GOST 4543 12HN3A vs GB/T 3077 12Cr2Ni4A is a 77.6% match. As per mechanical properties, the match is 30.3%. Combined, this makes them a related material overall at 61.8%.

Frequently Compared With GOST 4543 12HN3A:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H GB/T 3077 12CrNi3 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
77.6%
MECHANICAL MATCH
30.3%
OVERALL
61.8%
Specifications
Property GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A
Standard GOST 4543-2016 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.09-0.16 0.10-0.15
Cr (%) 0.6-0.9 1.25-1.65
Ni (%) 2.75-3.15 3.25-3.75
Mn (%) 0.3-0.6 0.30-0.60
Si (%) 0.17-0.37 0.17-0.37
P (%) Not specified 0.025 max
S (%) Not specified 0.025 max
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 12HN3A GB/T 3077 12Cr2Ni4A
Tensile Strength 850-1050 MPa 980-1180 MPa
Yield Strength 685 MPa min 785-980 MPa
Elongation 11% min 10-14%
Hardness 58-62 HRC (case) 58-62 HRC (case)
Typical Applications
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can GOST 4543 12HN3A Be Substituted With GB/T 3077 12Cr2Ni4A?
GOST 4543 12HN3A and GB/T 3077 12Cr2Ni4A 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.
Forms & Sizes Available on M-EX
GOST 4543 12HN3A
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–6600 mm (220.47–259.84 in)
GB/T 3077 12Cr2Ni4A
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5000–6600 mm (196.85–259.84 in)
On M-EX Right Now
GOST 4543 12HN3A
2 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 4543 12HN3A and GB/T 3077 12Cr2Ni4A?
GB/T 3077 12Cr2Ni4A specifies P, S which are not specified for GOST 4543 12HN3A.
Can GOST 4543 12HN3A be substituted with GB/T 3077 12Cr2Ni4A?
GOST 4543 12HN3A and GB/T 3077 12Cr2Ni4A 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.