Close Alternative — 83.1% match
based on chemical composition and mechanical property overlap.
EN 10085 41CrAlMo7 (EN 10085:2001) and AISI 4140 are both steel grades.
Both fall under the Alloy Steel category.
EN 10085 41CrAlMo7 is typically used for nitrided precision components, crankshafts, gears, while AISI 4140 is commonly used for gears, shafts, dies, bolts, crankshafts, tooling.
EN 10085 41CrAlMo7 is defined under European Standard (EN), originating from Europe, while AISI 4140 is defined under AISI, originating from United States.
As per chemical composition, EN 10085 41CrAlMo7 vs AISI 4140 is a 74.7% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a close alternative overall at 83.1%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10085 41CrAlMo7
AISI 4140
Tensile Strength
850–1000 MPa
850–1000 MPa
Surface Hardness HV
≥900 (nitrided)
Not specified
Core Hardness HB
248–302
Not specified
Condition
Not specified
Quenched & Tempered
Yield Strength
Not specified
≥680 MPa
Elongation
Not specified
≥13%
Hardness
Not specified
248–302 HB
Impact (Charpy)
Not specified
≥54 J
Typical Applications
EN 10085 41CrAlMo7
Nitrided precision components, crankshafts, gears
AISI 4140
Gears, shafts, dies, bolts, crankshafts, tooling
Key Differences
EN 10085 41CrAlMo7 specifies Al which is not specified for AISI 4140.
AISI 4140 specifies Si, S, P which are not specified for EN 10085 41CrAlMo7.
Can EN 10085 41CrAlMo7 Be Substituted With AISI 4140?
EN 10085 41CrAlMo7 and AISI 4140 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 10085 41CrAlMo7 and AISI 4140?
EN 10085 41CrAlMo7 specifies Al which is not specified for AISI 4140. AISI 4140 specifies Si, S, P which are not specified for EN 10085 41CrAlMo7.
Can EN 10085 41CrAlMo7 be substituted with AISI 4140?
EN 10085 41CrAlMo7 and AISI 4140 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.