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GB/T 3077 12CrNi3 vs GOST 4543 12HN3A

Close Alternative — 78.8% match based on chemical composition and mechanical property overlap.

GB/T 3077 12CrNi3 (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 12CrNi3 is typically used for hot-rolled or forged structural alloy steel bars, while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components.. GB/T 3077 12CrNi3 is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 3077 12CrNi3 vs GOST 4543 12HN3A is a 93.2% match. As per mechanical properties, the match is 50%. Combined, this makes them a close alternative overall at 78.8%.

Frequently Compared With GB/T 3077 12CrNi3:
IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
93.2%
MECHANICAL MATCH
50%
OVERALL
78.8%
Specifications
Property GB/T 3077 12CrNi3 GOST 4543 12HN3A
Standard GB/T 3077:2015 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.10-0.17 0.09-0.16
Si (%) 0.17-0.37 0.17-0.37
Mn (%) 0.30-0.60 0.3-0.6
Cr (%) 0.60-0.90 0.6-0.9
Ni (%) 2.75-3.15 2.75-3.15
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Cu (%) <=0.30 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 12CrNi3 GOST 4543 12HN3A
Tensile Strength >=930 MPa 850-1050 MPa
Yield Strength >=685 MPa 685 MPa min
Elongation >=11% 11% min
Hardness <=217 HB 58-62 HRC (case)
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Typical Applications
GB/T 3077 12CrNi3
Hot-rolled or forged structural alloy steel bars
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
Can GB/T 3077 12CrNi3 Be Substituted With GOST 4543 12HN3A?
GB/T 3077 12CrNi3 and GOST 4543 12HN3A are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
GB/T 3077 12CrNi3
No active listings currently.
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 12CrNi3
0 active listings and RFQs →
GOST 4543 12HN3A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 12CrNi3 and GOST 4543 12HN3A?
GB/T 3077 12CrNi3 specifies P, S, Cu which are not specified for GOST 4543 12HN3A.
Can GB/T 3077 12CrNi3 be substituted with GOST 4543 12HN3A?
GB/T 3077 12CrNi3 and GOST 4543 12HN3A are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.