Close Alternative — 81.2% match
based on chemical composition and mechanical property overlap.
KS D3867 SCM415 (KS D 3867:2025) and IS 4432 21Cr4Mo2 (IS 4432:1988) are both steel grades.
Both fall under the Alloy Steel category.
KS D3867 SCM415 is typically used for gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core., while IS 4432 21Cr4Mo2 is commonly used for forgings and fabrication of case-hardened machine or automobile parts.
KS D3867 SCM415 is defined under Korean Industrial Standards (KS), originating from South Korea, while IS 4432 21Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, KS D3867 SCM415 vs IS 4432 21Cr4Mo2 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.
Gears, shafts, camshafts, piston pins, precision machine components requiring hard surface and tough core.
IS 4432 21Cr4Mo2
Forgings and fabrication of case-hardened machine or automobile parts
Can KS D3867 SCM415 Be Substituted With IS 4432 21Cr4Mo2?
KS D3867 SCM415 and IS 4432 21Cr4Mo2 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 KS D3867 SCM415 and IS 4432 21Cr4Mo2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can KS D3867 SCM415 be substituted with IS 4432 21Cr4Mo2?
KS D3867 SCM415 and IS 4432 21Cr4Mo2 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.