Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10083-1 25CrMoS4 (EN 10083-1:1991) and UNI 11234 100Cr6 (UNI 11234:2007) are both steel grades.
Both fall under the Alloy Steel category.
EN 10083-1 25CrMoS4 is typically used for quenched and tempered machine parts; non alloy steels also normalized (clause 1), while UNI 11234 100Cr6 is commonly used for ball bearings,roller bearings,needle bearings,dies,punches,gauges,wear resistant components.
EN 10083-1 25CrMoS4 is defined under European Standard (EN), originating from Europe, while UNI 11234 100Cr6 is defined under Ente Nazionale Italiano di Unificazione (UNI), originating from Italy.
As per chemical composition, EN 10083-1 25CrMoS4 vs UNI 11234 100Cr6 is a 62.4% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-1 25CrMoS4
UNI 11234 100Cr6
Condition
Quenched and tempered, ruling section d <= 16 mm
Not specified
Elongation
12% min
10-14 %
Hardness
Soft annealed: 212 HB max
60-64 HRC
Tensile Strength
900 to 1100 MPa
750-1000 MPa
Yield Strength
700 MPa min
400-600 MPa
Typical Applications
EN 10083-1 25CrMoS4
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
EN 10083-1 25CrMoS4 specifies Mo which is not specified for UNI 11234 100Cr6.
Can EN 10083-1 25CrMoS4 Be Substituted With UNI 11234 100Cr6?
EN 10083-1 25CrMoS4 and UNI 11234 100Cr6 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between EN 10083-1 25CrMoS4 and UNI 11234 100Cr6?
EN 10083-1 25CrMoS4 specifies Mo which is not specified for UNI 11234 100Cr6.
Can EN 10083-1 25CrMoS4 be substituted with UNI 11234 100Cr6?
EN 10083-1 25CrMoS4 and UNI 11234 100Cr6 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.