Close Alternative — 72.6% match
based on chemical composition and mechanical property overlap.
EN 10083-3 33MnCrB5-2 (EN 10083-3:2006) and EN 10084 28Cr4 (EN 10084:2008) are both steel grades.
Both fall under the Alloy Steel category.
EN 10083-3 33MnCrB5-2 is typically used for quenched and tempered, flame or induction hardened machine parts (clause 1), while EN 10084 28Cr4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1).
EN 10083-3 33MnCrB5-2 is defined under European Standard (EN), originating from Europe, while EN 10084 28Cr4 is defined under European Standard (EN), originating from Europe.
As per chemical composition, EN 10083-3 33MnCrB5-2 vs EN 10084 28Cr4 is a 72.6% 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 72.6%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-3 33MnCrB5-2
EN 10084 28Cr4
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Soft annealed
Elongation
13% min
Not specified
Tensile Strength
1050 to 1300 MPa
Not specified
Yield Strength
850 MPa min
Not specified
Hardenability
Not specified
+H band at 1.5 mm from the quenched end: 45 to 53 HRC
Hardness
Not specified
Soft annealed: 217 HB max
Typical Applications
EN 10083-3 33MnCrB5-2
Quenched and tempered, flame or induction hardened machine parts (clause 1)
EN 10084 28Cr4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
EN 10083-3 33MnCrB5-2 specifies B which is not specified for EN 10084 28Cr4.
Can EN 10083-3 33MnCrB5-2 Be Substituted With EN 10084 28Cr4?
EN 10083-3 33MnCrB5-2 and EN 10084 28Cr4 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 EN 10083-3 33MnCrB5-2 and EN 10084 28Cr4?
EN 10083-3 33MnCrB5-2 specifies B which is not specified for EN 10084 28Cr4.
Can EN 10083-3 33MnCrB5-2 be substituted with EN 10084 28Cr4?
EN 10083-3 33MnCrB5-2 and EN 10084 28Cr4 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.