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GB/T 3077 20CrMo vs IS 4367 07Cr4Mo6

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

GB/T 3077 20CrMo (GB/T 3077:2015) and IS 4367 07Cr4Mo6 (IS 4367:1991) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 20CrMo is defined under Guobiao Standards (GB/T), originating from China, while IS 4367 07Cr4Mo6 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 3077 20CrMo vs IS 4367 07Cr4Mo6 is a 67.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 3077 20CrMo:
UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Cr20Mo6
Other Alloy Steel Grades to Compare With GB/T 3077 20CrMo:
EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
67.2%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 3077 20CrMo IS 4367 07Cr4Mo6
Standard GB/T 3077:2015 IS 4367:1991
Category Alloy Steel Alloy Steel
C (%) 0.17-0.24 <=0.12
Si (%) 0.17-0.37 0.15-0.60
Mn (%) 0.40-0.70 0.40-0.70
Cr (%) 0.80-1.10 0.70-1.10
Mo (%) 0.15-0.25 0.45-0.65
P (%) <=0.030 <=0.035
S (%) <=0.030 <=0.035
Cu (%) <=0.30 Not specified
Ni (%) Not specified <=0.30
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 20CrMo IS 4367 07Cr4Mo6
Tensile Strength >=885 MPa 380-550 MPa
Yield Strength >=685 MPa 225 MPa min
Elongation >=12% >=19%
Hardness <=197 HB Not specified
Condition Quenched and tempered, test sample 15 mm; hardness is for bars delivered annealed or high temperature tempered Normalised and tempered, ruling section up to 40 mm
Izod Impact Not specified 60 J min
Hardness (soft annealed) Not specified <=170 HB
Typical Applications
GB/T 3077 20CrMo
Used for gears, shafts, axles, transmission parts, fasteners, and machine components.
IS 4367 07Cr4Mo6
Not documented
Key Differences
Can GB/T 3077 20CrMo Be Substituted With IS 4367 07Cr4Mo6?
GB/T 3077 20CrMo and IS 4367 07Cr4Mo6 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
GB/T 3077 20CrMo
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4800–5200 mm (188.98–204.72 in)
IS 4367 07Cr4Mo6
No active listings currently.
On M-EX Right Now
GB/T 3077 20CrMo
2 active listings and RFQs →
IS 4367 07Cr4Mo6
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 3077 20CrMo and IS 4367 07Cr4Mo6?
GB/T 3077 20CrMo specifies Cu which is not specified for IS 4367 07Cr4Mo6. IS 4367 07Cr4Mo6 specifies Ni which is not specified for GB/T 3077 20CrMo.
Can GB/T 3077 20CrMo be substituted with IS 4367 07Cr4Mo6?
GB/T 3077 20CrMo and IS 4367 07Cr4Mo6 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.