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GB/T 3077 12Cr2Ni4A vs GB/T 3077 15CrNi6

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

GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) and GB/T 3077 15CrNi6 (GB/T 3077-2015) 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 GB/T 3077 15CrNi6 is commonly used for used for gears, shafts, pinions, crankshafts, transmission parts, and heavy-duty couplings.. GB/T 3077 12Cr2Ni4A is defined under Guobiao Standards (GB/T), originating from China, while GB/T 3077 15CrNi6 is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 3077 12Cr2Ni4A vs GB/T 3077 15CrNi6 is a 76.5% match. As per mechanical properties, the match is 66.4%. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With GB/T 3077 12Cr2Ni4A:
NF A35-565 100C6 GOST 4543 12HN3A IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 12Cr9Mo10H IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 7) 12Cr2Mo5V2H UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6
Match Breakdown
CHEMISTRY MATCH
76.5%
MECHANICAL MATCH
66.4%
OVERALL
69.9%
Specifications
Property GB/T 3077 12Cr2Ni4A GB/T 3077 15CrNi6
Standard GB/T 3077-2015 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.10-0.15 0.12-0.18
Si (%) 0.17-0.37 0.17-0.37
Mn (%) 0.30-0.60 0.30-0.60
Cr (%) 1.25-1.65 0.60-0.90
Ni (%) 3.25-3.75 1.40-1.70
P (%) 0.025 max 0.030 max
S (%) 0.025 max 0.030 max
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 GB/T 3077 15CrNi6
Tensile Strength 980-1180 MPa 880-1080 MPa
Yield Strength 785-980 MPa 685-880 MPa
Elongation 10-14% 10-14%
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.
GB/T 3077 15CrNi6
Used for gears, shafts, pinions, crankshafts, transmission parts, and heavy-duty couplings.
Can GB/T 3077 12Cr2Ni4A Be Substituted With GB/T 3077 15CrNi6?
GB/T 3077 12Cr2Ni4A and GB/T 3077 15CrNi6 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)
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)
On M-EX Right Now
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
GB/T 3077 15CrNi6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 12Cr2Ni4A and GB/T 3077 15CrNi6?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 12Cr2Ni4A be substituted with GB/T 3077 15CrNi6?
GB/T 3077 12Cr2Ni4A and GB/T 3077 15CrNi6 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.