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GB/T 3077 15CrNi6 vs GOST 4543 12HN3A

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

GB/T 3077 15CrNi6 (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 15CrNi6 is typically used for used for gears, shafts, pinions, crankshafts, transmission parts, and heavy-duty couplings., while GOST 4543 12HN3A is commonly used for used for gears, pinions, crankshafts, aircraft parts, and transmission components.. GB/T 3077 15CrNi6 is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 3077 15CrNi6 vs GOST 4543 12HN3A is a 84.4% match. As per mechanical properties, the match is 43.5%. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With GB/T 3077 15CrNi6:
GB/T 3077 12Cr2Ni4A NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Cr20Mo6 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
84.4%
MECHANICAL MATCH
43.5%
OVERALL
69.9%
Specifications
Property GB/T 3077 15CrNi6 GOST 4543 12HN3A
Standard GB/T 3077-2015 GOST 4543-2016
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 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 (%) 1.40-1.70 2.75-3.15
P (%) 0.030 max Not specified
S (%) 0.030 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 15CrNi6 GOST 4543 12HN3A
Tensile Strength 880-1080 MPa 850-1050 MPa
Yield Strength 685-880 MPa 685 MPa min
Elongation 10-14% 11% min
Hardness 58-62 HRC (case) 58-62 HRC (case)
Typical Applications
GB/T 3077 15CrNi6
Used for gears, shafts, pinions, crankshafts, transmission parts, and heavy-duty couplings.
GOST 4543 12HN3A
Used for gears, pinions, crankshafts, aircraft parts, and transmission components.
Key Differences
Can GB/T 3077 15CrNi6 Be Substituted With GOST 4543 12HN3A?
GB/T 3077 15CrNi6 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 15CrNi6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5100–6700 mm (200.79–263.78 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 15CrNi6
2 active listings and RFQs →
GOST 4543 12HN3A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 15CrNi6 and GOST 4543 12HN3A?
GB/T 3077 15CrNi6 specifies P, S which are not specified for GOST 4543 12HN3A.
Can GB/T 3077 15CrNi6 be substituted with GOST 4543 12HN3A?
GB/T 3077 15CrNi6 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.