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GB/T 3077 20CrMnTi vs EN 10084 28Cr4

Close Alternative — 80.9% match based on chemical composition and mechanical property overlap.

GB/T 3077 20CrMnTi (GB/T 3077:2015) and EN 10084 28Cr4 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 20CrMnTi is typically used for gears, transmission shafts, pinions, carburized components, automotive parts, while EN 10084 28Cr4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). GB/T 3077 20CrMnTi is defined under Guobiao Standards (GB/T), originating from China, while EN 10084 28Cr4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 3077 20CrMnTi vs EN 10084 28Cr4 is a 71.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 80.9%.

Frequently Compared With GB/T 3077 20CrMnTi:
NF A35-565 100C6 GOST 4543 12HN3A UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
71.3%
MECHANICAL MATCH
100%
OVERALL
80.9%
Specifications
Property GB/T 3077 20CrMnTi EN 10084 28Cr4
Standard GB/T 3077:2015 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.24-0.31
Si (%) 0.17-0.37 <=0.40
Mn (%) 0.80-1.10 0.60-0.90
Cr (%) 1.00-1.30 0.90-1.20
Ti (%) 0.04-0.10 Not specified
P (%) <=0.030 <=0.025
S (%) <=0.030 <=0.035
Cu (%) <=0.30 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 3077 20CrMnTi EN 10084 28Cr4
Tensile Strength >=1080 MPa Not specified
Yield Strength >=850 MPa Not specified
Elongation >=10% Not specified
Hardness <=217 HB Soft annealed: 217 HB max
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Soft annealed
Hardenability Not specified +H band at 1.5 mm from the quenched end: 45 to 53 HRC
Typical Applications
GB/T 3077 20CrMnTi
gears, transmission shafts, pinions, carburized components, automotive parts
EN 10084 28Cr4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
Can GB/T 3077 20CrMnTi Be Substituted With EN 10084 28Cr4?
GB/T 3077 20CrMnTi and EN 10084 28Cr4 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
GB/T 3077 20CrMnTi
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5500–6000 mm (216.54–236.22 in)
EN 10084 28Cr4
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On M-EX Right Now
GB/T 3077 20CrMnTi
2 active listings and RFQs →
EN 10084 28Cr4
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Frequently Asked Questions
What is the difference between GB/T 3077 20CrMnTi and EN 10084 28Cr4?
GB/T 3077 20CrMnTi specifies Ti, Cu which are not specified for EN 10084 28Cr4.
Can GB/T 3077 20CrMnTi be substituted with EN 10084 28Cr4?
GB/T 3077 20CrMnTi and EN 10084 28Cr4 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.