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EN 10084 20MnCr5 vs GB/T 3077 12Cr2Ni4A

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

EN 10084 20MnCr5 (EN 10084:2008) and GB/T 3077 12Cr2Ni4A (GB/T 3077-2015) are both steel grades. Both fall under the Alloy Steel category. EN 10084 20MnCr5 is typically used for gears, shafts, cams, 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.. EN 10084 20MnCr5 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 20MnCr5 vs GB/T 3077 12Cr2Ni4A is a 65.6% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With EN 10084 20MnCr5:
NF A35-565 100C6 UNI 11234 100Cr6 GOST 4543 12HN3A IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
65.6%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property EN 10084 20MnCr5 GB/T 3077 12Cr2Ni4A
Standard EN 10084:2008 GB/T 3077-2015
Category Alloy Steel Alloy Steel
C (%) 0.17-0.22 0.10-0.15
Cr (%) 1.00-1.30 1.25-1.65
Mn (%) 1.10-1.40 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 10084 20MnCr5 GB/T 3077 12Cr2Ni4A
Condition Soft annealed Not specified
Hardenability +H band at 1.5 mm from the quenched end: 41 to 49 HRC Not specified
Hardness Soft annealed: 217 HB max 58-62 HRC (case)
Tensile Strength Not specified 980-1180 MPa
Yield Strength Not specified 785-980 MPa
Elongation Not specified 10-14%
Typical Applications
EN 10084 20MnCr5
Gears, shafts, cams, case hardened parts
GB/T 3077 12Cr2Ni4A
Used for gears, shafts, pinions, aircraft parts, heavy-duty bearings, and transmission components.
Key Differences
Can EN 10084 20MnCr5 Be Substituted With GB/T 3077 12Cr2Ni4A?
EN 10084 20MnCr5 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 20MnCr5
Round Bar → (22 listings)
Diameter: 50–75 mm (1.97–2.95 in)
Length: 4700–6900 mm (185.04–271.65 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 20MnCr5
22 active listings and RFQs →
GB/T 3077 12Cr2Ni4A
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10084 20MnCr5 and GB/T 3077 12Cr2Ni4A?
GB/T 3077 12Cr2Ni4A specifies Ni which is not specified for EN 10084 20MnCr5.
Can EN 10084 20MnCr5 be substituted with GB/T 3077 12Cr2Ni4A?
EN 10084 20MnCr5 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.