Close Alternative — 72.4% match
based on chemical composition and mechanical property overlap.
DIN 17200 40NiCrMo6 (DIN 17200:1986) and SAE J404 4340 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
DIN 17200 40NiCrMo6 is typically used for heavy forgings, crankshafts, high strength components, while SAE J404 4340 is commonly used for aircraft parts, heavy duty gears, crankshafts.
DIN 17200 40NiCrMo6 is defined under Deutsches Institut fur Normung (DIN), originating from Germany, while SAE J404 4340 is defined under SAE International, originating from United States.
As per chemical composition, DIN 17200 40NiCrMo6 vs SAE J404 4340 is a 72.4% 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 72.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
DIN 17200 40NiCrMo6
SAE J404 4340
Tensile Strength
900–1100 MPa
Not specified
Yield Strength
≥720 MPa
Not specified
Elongation
≥12%
Not specified
Typical Applications
DIN 17200 40NiCrMo6
Heavy forgings, crankshafts, high strength components
SAE J404 4340
Aircraft parts, heavy duty gears, crankshafts
Key Differences
SAE J404 4340 specifies P, S, Si which are not specified for DIN 17200 40NiCrMo6.
Can DIN 17200 40NiCrMo6 Be Substituted With SAE J404 4340?
DIN 17200 40NiCrMo6 and SAE J404 4340 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 DIN 17200 40NiCrMo6 and SAE J404 4340?
SAE J404 4340 specifies P, S, Si which are not specified for DIN 17200 40NiCrMo6.
Can DIN 17200 40NiCrMo6 be substituted with SAE J404 4340?
DIN 17200 40NiCrMo6 and SAE J404 4340 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.