Strong Match — 85.2% match
based on chemical composition and mechanical property overlap.
IS 4432 20Mn5Cr5 (IS 4432:1988) and EN 10084 28Cr4 (EN 10084:2008) are both steel grades.
Both fall under the Alloy Steel category.
IS 4432 20Mn5Cr5 is typically used for forgings and fabrication of case-hardened machine or automobile parts, while EN 10084 28Cr4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1).
IS 4432 20Mn5Cr5 is defined under Bureau of Indian Standards (IS), originating from India, while EN 10084 28Cr4 is defined under European Standard (EN), originating from Europe.
As per chemical composition, IS 4432 20Mn5Cr5 vs EN 10084 28Cr4 is a 77.8% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 85.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
+H band at 1.5 mm from the quenched end: 45 to 53 HRC
Hardness
Not specified
Soft annealed: 217 HB max
Typical Applications
IS 4432 20Mn5Cr5
Forgings and fabrication of case-hardened machine or automobile parts
EN 10084 28Cr4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Can IS 4432 20Mn5Cr5 Be Substituted With EN 10084 28Cr4?
IS 4432 20Mn5Cr5 and EN 10084 28Cr4 overlap closely enough on chemistry and mechanical properties that EN 10084 28Cr4 is often considered as a substitute for IS 4432 20Mn5Cr5 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between IS 4432 20Mn5Cr5 and EN 10084 28Cr4?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 4432 20Mn5Cr5 be substituted with EN 10084 28Cr4?
IS 4432 20Mn5Cr5 and EN 10084 28Cr4 overlap closely enough on chemistry and mechanical properties that EN 10084 28Cr4 is often considered as a substitute for IS 4432 20Mn5Cr5 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.