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GB/T 3077 12Cr2Ni4A vs GOST 4543 12HN3A

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

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

As per chemical composition, GB/T 3077 12Cr2Ni4A vs GOST 4543 12HN3A 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 GB/T 3077 12Cr2Ni4A:
NF A35-565 100C6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 12Cr9Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 7) 12Cr2Mo5V2H UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
77.6%
MECHANICAL MATCH
30.3%
OVERALL
61.8%
Specifications
Property GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A
Standard GB/T 3077-2015 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.10-0.15 0.09-0.16
Si (%) 0.17-0.37 0.17-0.37
Mn (%) 0.30-0.60 0.3-0.6
Cr (%) 1.25-1.65 0.6-0.9
Ni (%) 3.25-3.75 2.75-3.15
P (%) 0.025 max Not specified
S (%) 0.025 max Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A
Tensile Strength 980-1180 MPa 850-1050 MPa
Yield Strength 785-980 MPa 685 MPa min
Elongation 10-14% 11% min
Hardness 58-62 HRC (case) 58-62 HRC (case)
Typical Applications
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
Can GB/T 3077 12Cr2Ni4A Be Substituted With GOST 4543 12HN3A?
GB/T 3077 12Cr2Ni4A 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.
Forms & Sizes Available on M-EX
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)
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)
On M-EX Right Now
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
GOST 4543 12HN3A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 12Cr2Ni4A and GOST 4543 12HN3A?
GB/T 3077 12Cr2Ni4A specifies P, S which are not specified for GOST 4543 12HN3A.
Can GB/T 3077 12Cr2Ni4A be substituted with GOST 4543 12HN3A?
GB/T 3077 12Cr2Ni4A 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.