Close Alternative — 82.1% match
based on chemical composition and mechanical property overlap.
SAE J404 4120 (SAE J404:2009) and DIN 17210 20CrMo5 (DIN 17210:1986) are both steel grades.
Both fall under the Alloy Steel category.
SAE J404 4120 is typically used for used for gears, crankshafts, studs, pins, machinery parts, and transmission components., while DIN 17210 20CrMo5 is commonly used for used in gears, shafts, pinions, camshafts, and transmission components..
SAE J404 4120 is defined under SAE International, originating from United States, while DIN 17210 20CrMo5 is defined under Deutsches Institut fur Normung (DIN), originating from Germany.
As per chemical composition, SAE J404 4120 vs DIN 17210 20CrMo5 is a 82.1% 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 82.1%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
SAE J404 4120
DIN 17210 20CrMo5
Tensile Strength
Not specified
800-1000 MPa
Yield Strength
Not specified
600 MPa min
Elongation
Not specified
10-14%
Hardness
Not specified
248-302 HB
Typical Applications
SAE J404 4120
Used for gears, crankshafts, studs, pins, machinery parts, and transmission components.
DIN 17210 20CrMo5
Used in gears, shafts, pinions, camshafts, and transmission components.
Can SAE J404 4120 Be Substituted With DIN 17210 20CrMo5?
SAE J404 4120 and DIN 17210 20CrMo5 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 SAE J404 4120 and DIN 17210 20CrMo5?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can SAE J404 4120 be substituted with DIN 17210 20CrMo5?
SAE J404 4120 and DIN 17210 20CrMo5 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.