Minimal Match — 48.1% match
based on chemical composition and mechanical property overlap.
GB/T 3077 15CrMo (GB/T 3077:2015) and IS 11169 (Part 1) 12Cr4Mo2 (IS 11169 (Part 1):2022) are both steel grades.
Both fall under the Alloy Steel category.
GB/T 3077 15CrMo is typically used for used for boiler tubes, pressure vessels, steam pipes, petrochemical equipment, flanges, and high-temperature fasteners., while IS 11169 (Part 1) 12Cr4Mo2 is commonly used for cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex b).
GB/T 3077 15CrMo is defined under Guobiao Standards (GB/T), originating from China, while IS 11169 (Part 1) 12Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, GB/T 3077 15CrMo vs IS 11169 (Part 1) 12Cr4Mo2 is a 72.1% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 48.1%.
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 15CrMo
IS 11169 (Part 1) 12Cr4Mo2
Tensile Strength
>=440 MPa
Not specified
Yield Strength
>=295 MPa
Not specified
Elongation
>=22%
Not specified
Hardness
<=179 HB
Not specified
Condition
Quenched and tempered, test sample 30 mm; hardness is for bars delivered annealed or high temperature tempered
Not specified
Hardness, ferrite-pearlite (+FP)
Not specified
135-185 HB
Tensile Strength, annealed (+AC)
Not specified
<=500 MPa (over 5 to 40 mm)
Typical Applications
GB/T 3077 15CrMo
Used for boiler tubes, pressure vessels, steam pipes, petrochemical equipment, flanges, and high-temperature fasteners.
IS 11169 (Part 1) 12Cr4Mo2
Cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex B)
Can GB/T 3077 15CrMo Be Substituted With IS 11169 (Part 1) 12Cr4Mo2?
GB/T 3077 15CrMo and IS 11169 (Part 1) 12Cr4Mo2 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.
What is the difference between GB/T 3077 15CrMo and IS 11169 (Part 1) 12Cr4Mo2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 3077 15CrMo be substituted with IS 11169 (Part 1) 12Cr4Mo2?
GB/T 3077 15CrMo and IS 11169 (Part 1) 12Cr4Mo2 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.