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EN 10085 41CrAlMo7 vs GB/T 3077 12Cr2Ni4A

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

EN 10085 41CrAlMo7 (EN 10085:2001) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. EN 10085 41CrAlMo7 is typically used for nitrided precision components, crankshafts, gears, while GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. EN 10085 41CrAlMo7 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 10085 41CrAlMo7 vs GB/T 3077 12Cr2Ni4A is a 55.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With EN 10085 41CrAlMo7:
GOST 4543 12HN3A NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
55.3%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property EN 10085 41CrAlMo7 GB/T 3077 12Cr2Ni4A
Standard EN 10085:2001 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.38–0.45 0.10-0.15
Mn (%) 0.40–0.70 0.30-0.60
Cr (%) 1.40–1.80 1.25-1.65
Mo (%) 0.15–0.25 Not specified
Al (%) 0.85–1.20 Not specified
Si (%) Not specified 0.17-0.37
Ni (%) Not specified 3.25-3.75
P (%) Not specified 0.025 max
S (%) Not specified 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 EN 10085 41CrAlMo7 GB/T 3077 12Cr2Ni4A
Tensile Strength 850–1000 MPa 980-1180 MPa
Surface Hardness HV ≥900 (nitrided) Not specified
Core Hardness HB 248–302 Not specified
Yield Strength Not specified 785-980 MPa
Elongation Not specified 10-14%
Hardness Not specified 58-62 HRC (case)
Typical Applications
EN 10085 41CrAlMo7
Nitrided precision components, crankshafts, gears
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can EN 10085 41CrAlMo7 Be Substituted With GB/T 3077 12Cr2Ni4A?
EN 10085 41CrAlMo7 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 10085 41CrAlMo7
Round Bar → (4 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6300–6500 mm (248.03–255.91 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 10085 41CrAlMo7
4 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10085 41CrAlMo7 and GB/T 3077 12Cr2Ni4A?
EN 10085 41CrAlMo7 specifies Mo, Al which are not specified for GB/T 3077 12Cr2Ni4A. GB/T 3077 12Cr2Ni4A specifies Si, Ni, P, S which are not specified for EN 10085 41CrAlMo7.
Can EN 10085 41CrAlMo7 be substituted with GB/T 3077 12Cr2Ni4A?
EN 10085 41CrAlMo7 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.