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EN 10083-3 34Cr4 vs GB/T 3077 12Cr2Ni4A

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

EN 10083-3 34Cr4 (EN 10083-3:2006) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. EN 10083-3 34Cr4 is typically used for used in high-tensile bolts, studs, shafts, and general engineering components., while GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. EN 10083-3 34Cr4 is defined under European Standard (EN), originating from Europe, while GB/T 3077 12Cr2Ni4A is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, EN 10083-3 34Cr4 vs GB/T 3077 12Cr2Ni4A is a 64.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With EN 10083-3 34Cr4:
GOST 4543 12HN3A NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 IS 4367 10Cr9Mo10 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
64.9%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property EN 10083-3 34Cr4 GB/T 3077 12Cr2Ni4A
Standard EN 10083-3:2006 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.30-0.37 0.10-0.15
Cr (%) 0.90-1.20 1.25-1.65
Mn (%) 0.60-0.90 0.30-0.60
P (%) <=0.025 0.025 max
S (%) <=0.035 0.025 max
Si (%) <=0.40 0.17-0.37
Ni (%) Not specified 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 EN 10083-3 34Cr4 GB/T 3077 12Cr2Ni4A
Condition Quenched and tempered (+QT), ruling section d <= 16 mm Not specified
Elongation 12% min 10-14%
Hardness Soft annealed (+A): 223 HBW max 58-62 HRC (case)
Tensile Strength 900 to 1100 MPa 980-1180 MPa
Yield Strength 700 MPa min 785-980 MPa
Typical Applications
EN 10083-3 34Cr4
Used in high-tensile bolts, studs, shafts, and general engineering components.
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can EN 10083-3 34Cr4 Be Substituted With GB/T 3077 12Cr2Ni4A?
EN 10083-3 34Cr4 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
EN 10083-3 34Cr4
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6200–6200 mm (244.09–244.09 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
EN 10083-3 34Cr4
2 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10083-3 34Cr4 and GB/T 3077 12Cr2Ni4A?
GB/T 3077 12Cr2Ni4A specifies Ni which is not specified for EN 10083-3 34Cr4.
Can EN 10083-3 34Cr4 be substituted with GB/T 3077 12Cr2Ni4A?
EN 10083-3 34Cr4 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.