Close Alternative — 74.1% match
based on chemical composition and mechanical property overlap.
IS 11169 (Part 1) 18Cr4Mo2S3 (IS 11169 (Part 1):2022) and KS D3867 SCM415 (KS D 3867:2025) are both steel grades.
Both fall under the Alloy Steel category.
IS 11169 (Part 1) 18Cr4Mo2S3 is typically 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), while KS D3867 SCM415 is commonly used for gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core..
IS 11169 (Part 1) 18Cr4Mo2S3 is defined under Bureau of Indian Standards (IS), originating from India, while KS D3867 SCM415 is defined under Korean Industrial Standards (KS), originating from South Korea.
As per chemical composition, IS 11169 (Part 1) 18Cr4Mo2S3 vs KS D3867 SCM415 is a 74.1% 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 74.1%.
Frequently Compared With IS 11169 (Part 1) 18Cr4Mo2S3:
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) 18Cr4Mo2S3
KS D3867 SCM415
Hardness, ferrite-pearlite (+FP)
140-187 HB
Not specified
Tensile Strength, annealed (+AC)
<=550 MPa (over 5 to 40 mm)
Not specified
Typical Applications
IS 11169 (Part 1) 18Cr4Mo2S3
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)
KS D3867 SCM415
Gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core.
Key Differences
IS 11169 (Part 1) 18Cr4Mo2S3 specifies Cu which is not specified for KS D3867 SCM415.
Can IS 11169 (Part 1) 18Cr4Mo2S3 Be Substituted With KS D3867 SCM415?
IS 11169 (Part 1) 18Cr4Mo2S3 and KS D3867 SCM415 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) 18Cr4Mo2S3 and KS D3867 SCM415?
IS 11169 (Part 1) 18Cr4Mo2S3 specifies Cu which is not specified for KS D3867 SCM415.
Can IS 11169 (Part 1) 18Cr4Mo2S3 be substituted with KS D3867 SCM415?
IS 11169 (Part 1) 18Cr4Mo2S3 and KS D3867 SCM415 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.