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GB/T 3077 20CrMnTi vs JIS G4053 SMnC420

Close Alternative — 72.1% match based on chemical composition and mechanical property overlap.

GB/T 3077 20CrMnTi (GB/T 3077:2015) and JIS G4053 SMnC420 (JIS G4053:2008) 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 JIS G4053 SMnC420 is commonly used for case hardened gears, shafts, cams, pins, automotive components. GB/T 3077 20CrMnTi is defined under Guobiao Standards (GB/T), originating from China, while JIS G4053 SMnC420 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, GB/T 3077 20CrMnTi vs JIS G4053 SMnC420 is a 74.9% match. As per mechanical properties, the match is 66.7%. Combined, this makes them a close alternative overall at 72.1%.

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 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 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
74.9%
MECHANICAL MATCH
66.7%
OVERALL
72.1%
Specifications
Property GB/T 3077 20CrMnTi JIS G4053 SMnC420
Standard GB/T 3077:2015 JIS G4053:2008
Category Alloy Steel Alloy Steel
C (%) 0.17-0.23 0.17–0.23
Si (%) 0.17-0.37 0.15–0.35
Mn (%) 0.80-1.10 1.15–1.55
Cr (%) 1.00-1.30 0.35–0.70
Ti (%) 0.04-0.10 Not specified
P (%) <=0.030 ≤0.030
S (%) <=0.030 ≤0.030
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 JIS G4053 SMnC420
Tensile Strength >=1080 MPa 785–980 MPa
Yield Strength >=850 MPa Not specified
Elongation >=10% ≥10%
Hardness <=217 HB Not specified
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Case Hardness HRC Not specified 58–62
Core Hardness HB Not specified 217–277
Typical Applications
GB/T 3077 20CrMnTi
gears, transmission shafts, pinions, carburized components, automotive parts
JIS G4053 SMnC420
Case hardened gears, shafts, cams, pins, automotive components
Key Differences
Can GB/T 3077 20CrMnTi Be Substituted With JIS G4053 SMnC420?
GB/T 3077 20CrMnTi and JIS G4053 SMnC420 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)
JIS G4053 SMnC420
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6500–6500 mm (255.91–255.91 in)
On M-EX Right Now
GB/T 3077 20CrMnTi
2 active listings and RFQs →
JIS G4053 SMnC420
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 20CrMnTi and JIS G4053 SMnC420?
GB/T 3077 20CrMnTi specifies Ti, Cu which are not specified for JIS G4053 SMnC420.
Can GB/T 3077 20CrMnTi be substituted with JIS G4053 SMnC420?
GB/T 3077 20CrMnTi and JIS G4053 SMnC420 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.