Close Alternative — 82.4% match
based on chemical composition and mechanical property overlap.
SAE J404 4027 (SAE J404:2009) and IS 11169 (Part 1) 37Mo2 (IS 11169 (Part 1):2022) are both steel grades.
Both fall under the Alloy Steel category.
SAE J404 4027 is typically used for chemistry-only alloy steel grade; see the composition notes for product scope, while IS 11169 (Part 1) 37Mo2 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).
SAE J404 4027 is defined under SAE International, originating from United States, while IS 11169 (Part 1) 37Mo2 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, SAE J404 4027 vs IS 11169 (Part 1) 37Mo2 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
SAE J404 4027
IS 11169 (Part 1) 37Mo2
Core Hardness (CH)
Not specified
>=48 HRC up to 8 mm
Tensile Strength, annealed (+AC)
Not specified
<=570 MPa (over 5 to 40 mm)
Typical Applications
SAE J404 4027
Chemistry-only alloy steel grade; see the composition notes for product scope
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)
Key Differences
IS 11169 (Part 1) 37Mo2 specifies Cu which is not specified for SAE J404 4027.
Can SAE J404 4027 Be Substituted With IS 11169 (Part 1) 37Mo2?
SAE J404 4027 and IS 11169 (Part 1) 37Mo2 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 SAE J404 4027 and IS 11169 (Part 1) 37Mo2?
IS 11169 (Part 1) 37Mo2 specifies Cu which is not specified for SAE J404 4027.
Can SAE J404 4027 be substituted with IS 11169 (Part 1) 37Mo2?
SAE J404 4027 and IS 11169 (Part 1) 37Mo2 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.