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UNI 7846 16NiCr11 vs GB/T 3077 12Cr2Ni4A

Related Material — 64.1% match based on chemical composition and mechanical property overlap.

UNI 7846 16NiCr11 (UNI 7846:1978) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. UNI 7846 16NiCr11 is typically used for gears,pinion shafts,camshafts,transmission parts,heavy duty components,case hardened parts, while GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. UNI 7846 16NiCr11 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy, while GB/T 3077 12Cr2Ni4A is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, UNI 7846 16NiCr11 vs GB/T 3077 12Cr2Ni4A is a 73.7% match. As per mechanical properties, the match is 45%. Combined, this makes them a related material overall at 64.1%.

Frequently Compared With UNI 7846 16NiCr11:
GOST 4543 12HN3A UNI 11234 100Cr6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
73.7%
MECHANICAL MATCH
45%
OVERALL
64.1%
Specifications
Property UNI 7846 16NiCr11 GB/T 3077 12Cr2Ni4A
Standard UNI 7846:1978 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.13-0.18 0.10-0.15
Si (%) 0.15-0.40 0.17-0.37
Mn (%) 0.30-0.60 0.30-0.60
P (%) <=0.035 0.025 max
S (%) <=0.035 0.025 max
Cr (%) 0.60-1.00 1.25-1.65
Ni (%) 2.50-3.00 3.25-3.75
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property UNI 7846 16NiCr11 GB/T 3077 12Cr2Ni4A
Tensile Strength 700-950 MPa 980-1180 MPa
Yield Strength 400-600 MPa 785-980 MPa
Elongation 10-15 % 10-14%
Hardness 58-62 HRC 58-62 HRC (case)
Typical Applications
UNI 7846 16NiCr11
gears,pinion shafts,camshafts,transmission parts,heavy duty components,case hardened parts
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Can UNI 7846 16NiCr11 Be Substituted With GB/T 3077 12Cr2Ni4A?
UNI 7846 16NiCr11 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
UNI 7846 16NiCr11
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5600–6000 mm (220.47–236.22 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
UNI 7846 16NiCr11
2 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between UNI 7846 16NiCr11 and GB/T 3077 12Cr2Ni4A?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can UNI 7846 16NiCr11 be substituted with GB/T 3077 12Cr2Ni4A?
UNI 7846 16NiCr11 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.