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AISI 8617 vs GB/T 3077 12Cr2Ni4A

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

AISI 8617 and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. AISI 8617 is typically used for used for gears, camshafts, transmission parts, pinions, bearings, and heavy-duty mechanical components., while GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. AISI 8617 is defined under AISI, originating from United States, while GB/T 3077 12Cr2Ni4A is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, AISI 8617 vs GB/T 3077 12Cr2Ni4A is a 57.1% match. As per mechanical properties, the match is 6.3%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With AISI 8617:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
57.1%
MECHANICAL MATCH
6.3%
OVERALL
35%
Specifications
Property AISI 8617 GB/T 3077 12Cr2Ni4A
Standard AISI GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.15-0.20 0.10-0.15
Mn (%) 0.70-0.90 0.30-0.60
Si (%) 0.15-0.35 0.17-0.37
Ni (%) 0.40-0.70 3.25-3.75
Cr (%) 0.40-0.60 1.25-1.65
Mo (%) 0.15-0.25 Not specified
P (%) 0.035 max 0.025 max
S (%) 0.040 max 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 AISI 8617 GB/T 3077 12Cr2Ni4A
Tensile Strength 720-920 MPa 980-1180 MPa
Yield Strength 520-720 MPa 785-980 MPa
Elongation 12-18% 10-14%
Hardness 190-250 HB 58-62 HRC (case)
Typical Applications
AISI 8617
Used for gears, camshafts, transmission parts, pinions, bearings, and heavy-duty mechanical components.
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can AISI 8617 Be Substituted With GB/T 3077 12Cr2Ni4A?
AISI 8617 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
AISI 8617
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5100–6600 mm (200.79–259.84 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
AISI 8617
2 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 8617 and GB/T 3077 12Cr2Ni4A?
AISI 8617 specifies Mo which is not specified for GB/T 3077 12Cr2Ni4A.
Can AISI 8617 be substituted with GB/T 3077 12Cr2Ni4A?
AISI 8617 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.