Close Alternative — 81.2% match
based on chemical composition and mechanical property overlap.
IS 4432 21Cr4Mo2 (IS 4432:1988) and KS D3867 SCM415 (KS D 3867:2025) are both steel grades.
Both fall under the Alloy Steel category.
IS 4432 21Cr4Mo2 is typically used for forgings and fabrication of case-hardened machine or automobile parts, while KS D3867 SCM415 is commonly used for gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core..
IS 4432 21Cr4Mo2 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 4432 21Cr4Mo2 vs KS D3867 SCM415 is a 81.2% 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 81.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Forgings and fabrication of case-hardened machine or automobile parts
KS D3867 SCM415
Gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core.
Can IS 4432 21Cr4Mo2 Be Substituted With KS D3867 SCM415?
IS 4432 21Cr4Mo2 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 4432 21Cr4Mo2 and KS D3867 SCM415?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 4432 21Cr4Mo2 be substituted with KS D3867 SCM415?
IS 4432 21Cr4Mo2 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.