Related Material — 68.8% match
based on chemical composition and mechanical property overlap.
IS 11169 (Part 1) 31Cr2Mo1BT (IS 11169 (Part 1):2022) and SAE J404 4118 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
IS 11169 (Part 1) 31Cr2Mo1BT 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 4118 is commonly used for gears, camshafts, pins and lightly stressed automotive components.
IS 11169 (Part 1) 31Cr2Mo1BT is defined under Bureau of Indian Standards (IS), originating from India, while SAE J404 4118 is defined under SAE International, originating from United States.
As per chemical composition, IS 11169 (Part 1) 31Cr2Mo1BT vs SAE J404 4118 is a 68.8% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a related material overall at 68.8%.
Frequently Compared With IS 11169 (Part 1) 31Cr2Mo1BT:
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) 31Cr2Mo1BT
SAE J404 4118
Core Hardness (CH)
>=45 HRC up to 30 mm
Not specified
Tensile Strength, annealed (+AC)
<=570 MPa (over 5 to 40 mm)
Not specified
Typical Applications
IS 11169 (Part 1) 31Cr2Mo1BT
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 4118
Gears, camshafts, pins and lightly stressed automotive components
Key Differences
IS 11169 (Part 1) 31Cr2Mo1BT specifies B, Cu which are not specified for SAE J404 4118.
Can IS 11169 (Part 1) 31Cr2Mo1BT Be Substituted With SAE J404 4118?
IS 11169 (Part 1) 31Cr2Mo1BT and SAE J404 4118 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 IS 11169 (Part 1) 31Cr2Mo1BT and SAE J404 4118?
IS 11169 (Part 1) 31Cr2Mo1BT specifies B, Cu which are not specified for SAE J404 4118.
Can IS 11169 (Part 1) 31Cr2Mo1BT be substituted with SAE J404 4118?
IS 11169 (Part 1) 31Cr2Mo1BT and SAE J404 4118 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.