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EN 10084 17CrNiMo6 vs GB/T 3077 12Cr2Ni4A

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

EN 10084 17CrNiMo6 (EN 10084:1998) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. EN 10084 17CrNiMo6 is typically used for used in heavy-duty gears, pinions, drive shafts, transmission parts, and industrial gearboxes., while GB/T 3077 12Cr2Ni4A is commonly used for used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.. EN 10084 17CrNiMo6 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 10084 17CrNiMo6 vs GB/T 3077 12Cr2Ni4A is a 61.3% match. As per mechanical properties, the match is 26.7%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With EN 10084 17CrNiMo6:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6
Other Alloy Steel Grades to Compare With EN 10084 17CrNiMo6:
EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
61.3%
MECHANICAL MATCH
26.7%
OVERALL
35%
Specifications
Property EN 10084 17CrNiMo6 GB/T 3077 12Cr2Ni4A
Standard EN 10084:1998 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.15-0.21 0.10-0.15
Si (%) 0.15-0.40 0.17-0.37
Mn (%) 0.50-0.90 0.30-0.60
Cr (%) 1.50-1.80 1.25-1.65
Ni (%) 1.40-1.70 3.25-3.75
Mo (%) 0.25-0.35 Not specified
P (%) <=0.025 0.025 max
S (%) <=0.035 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 10084 17CrNiMo6 GB/T 3077 12Cr2Ni4A
Tensile Strength 900-1200 MPa 980-1180 MPa
Yield Strength 750 MPa min 785-980 MPa
Elongation 9-12% 10-14%
Hardness 280-340 HB 58-62 HRC (case)
Typical Applications
EN 10084 17CrNiMo6
Used in heavy-duty gears, pinions, drive shafts, transmission parts, and industrial gearboxes.
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can EN 10084 17CrNiMo6 Be Substituted With GB/T 3077 12Cr2Ni4A?
EN 10084 17CrNiMo6 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 10084 17CrNiMo6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5900–6200 mm (232.28–244.09 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 10084 17CrNiMo6
2 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10084 17CrNiMo6 and GB/T 3077 12Cr2Ni4A?
EN 10084 17CrNiMo6 specifies Mo which is not specified for GB/T 3077 12Cr2Ni4A.
Can EN 10084 17CrNiMo6 be substituted with GB/T 3077 12Cr2Ni4A?
EN 10084 17CrNiMo6 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.