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GB/T 3077 40CrNiMo vs IS 11169 (Part 1) 40Cr4Mo2

Close Alternative — 74.8% match based on chemical composition and mechanical property overlap.

GB/T 3077 40CrNiMo (GB/T 3077:2015) and IS 11169 (Part 1) 40Cr4Mo2 (IS 11169 (Part 1):2022) are both steel grades. Both fall under the Alloy Steel category. GB/T 3077 40CrNiMo is typically used for hot-rolled or forged structural alloy steel bars, while IS 11169 (Part 1) 40Cr4Mo2 is commonly used for cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex c). GB/T 3077 40CrNiMo is defined under Guobiao Standards (GB/T), originating from China, while IS 11169 (Part 1) 40Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, GB/T 3077 40CrNiMo vs IS 11169 (Part 1) 40Cr4Mo2 is a 74.8% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 74.8%.

Frequently Compared With GB/T 3077 40CrNiMo:
IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 EN 10028-2 10CrMo9-10 IS 1570 (Part 7) 10Mo6H NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
74.8%
MECHANICAL MATCH
No shared data
OVERALL
74.8%
Specifications
Property GB/T 3077 40CrNiMo IS 11169 (Part 1) 40Cr4Mo2
Standard GB/T 3077:2015 IS 11169 (Part 1):2022
Category Alloy Steel Alloy Steel
C (%) 0.37-0.44 0.38-0.43
Si (%) 0.17-0.37 0.15-0.35
Mn (%) 0.50-0.80 0.75-1.00
Cr (%) 0.60-0.90 0.80-1.10
Mo (%) 0.15-0.25 0.15-0.25
Ni (%) 1.25-1.65 <=0.25
P (%) <=0.030 <=0.030
S (%) <=0.030 <=0.040
Cu (%) <=0.30 <=0.35
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 40CrNiMo IS 11169 (Part 1) 40Cr4Mo2
Tensile Strength >=980 MPa Not specified
Yield Strength >=835 MPa Not specified
Elongation >=12% Not specified
Hardness <=269 HB Not specified
Condition Quenched and tempered, test sample 25 mm; hardness is for bars delivered annealed or high temperature tempered Not specified
Typical Applications
GB/T 3077 40CrNiMo
Hot-rolled or forged structural alloy steel bars
IS 11169 (Part 1) 40Cr4Mo2
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
Can GB/T 3077 40CrNiMo Be Substituted With IS 11169 (Part 1) 40Cr4Mo2?
GB/T 3077 40CrNiMo and IS 11169 (Part 1) 40Cr4Mo2 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.
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GB/T 3077 40CrNiMo
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IS 11169 (Part 1) 40Cr4Mo2
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Frequently Asked Questions
What is the difference between GB/T 3077 40CrNiMo and IS 11169 (Part 1) 40Cr4Mo2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 40CrNiMo be substituted with IS 11169 (Part 1) 40Cr4Mo2?
GB/T 3077 40CrNiMo and IS 11169 (Part 1) 40Cr4Mo2 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.