Strong Match — 88.2% match
based on chemical composition and mechanical property overlap.
EN 10084 20MnCr5 (EN 10084:2008) and JIS G4053 SMnC420 (JIS G4053:2008) are both steel grades.
Both fall under the Alloy Steel category.
EN 10084 20MnCr5 is typically used for gears, shafts, cams, case hardened parts, while JIS G4053 SMnC420 is commonly used for case hardened gears, shafts, cams, pins, automotive components.
EN 10084 20MnCr5 is defined under European Standard (EN), originating from Europe, while JIS G4053 SMnC420 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, EN 10084 20MnCr5 vs JIS G4053 SMnC420 is a 82.3% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 88.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10084 20MnCr5
JIS G4053 SMnC420
Condition
Soft annealed
Not specified
Hardenability
+H band at 1.5 mm from the quenched end: 41 to 49 HRC
Not specified
Hardness
Soft annealed: 217 HB max
Not specified
Tensile Strength
Not specified
785–980 MPa
Case Hardness HRC
Not specified
58–62
Core Hardness HB
Not specified
217–277
Elongation
Not specified
≥10%
Typical Applications
EN 10084 20MnCr5
Gears, shafts, cams, case hardened parts
JIS G4053 SMnC420
Case hardened gears, shafts, cams, pins, automotive components
Can EN 10084 20MnCr5 Be Substituted With JIS G4053 SMnC420?
EN 10084 20MnCr5 and JIS G4053 SMnC420 overlap closely enough on chemistry and mechanical properties that JIS G4053 SMnC420 is often considered as a substitute for EN 10084 20MnCr5 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 EN 10084 20MnCr5 and JIS G4053 SMnC420?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10084 20MnCr5 be substituted with JIS G4053 SMnC420?
EN 10084 20MnCr5 and JIS G4053 SMnC420 overlap closely enough on chemistry and mechanical properties that JIS G4053 SMnC420 is often considered as a substitute for EN 10084 20MnCr5 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.