Close Alternative — 82.4% match
based on chemical composition and mechanical property overlap.
IS 11169 (Part 1) 37Mo2 (IS 11169 (Part 1):2022) and SAE J404 4027 (SAE J404:2000) are both steel grades.
Both fall under the Alloy Steel category.
IS 11169 (Part 1) 37Mo2 is typically 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), while SAE J404 4027 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope.
IS 11169 (Part 1) 37Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while SAE J404 4027 is defined under SAE International, originating from United States.
As per chemical composition, IS 11169 (Part 1) 37Mo2 vs SAE J404 4027 is a 82.4% 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 82.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 11169 (Part 1) 37Mo2
SAE J404 4027
Core Hardness (CH)
>=48 HRC up to 8 mm
Not specified
Tensile Strength, annealed (+AC)
<=570 MPa (over 5 to 40 mm)
Not specified
Typical Applications
IS 11169 (Part 1) 37Mo2
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)
SAE J404 4027
Chemistry-only alloy steel grade; see the composition notes for product scope
Key Differences
IS 11169 (Part 1) 37Mo2 specifies Cu which is not specified for SAE J404 4027.
Can IS 11169 (Part 1) 37Mo2 Be Substituted With SAE J404 4027?
IS 11169 (Part 1) 37Mo2 and SAE J404 4027 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.
What is the difference between IS 11169 (Part 1) 37Mo2 and SAE J404 4027?
IS 11169 (Part 1) 37Mo2 specifies Cu which is not specified for SAE J404 4027.
Can IS 11169 (Part 1) 37Mo2 be substituted with SAE J404 4027?
IS 11169 (Part 1) 37Mo2 and SAE J404 4027 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.