Strong Match — 88.2% match
based on chemical composition and mechanical property overlap.
EN 10084 20NiCrMoS2-2 (EN 10084:2008) and SAE J404 8620 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
EN 10084 20NiCrMoS2-2 is typically used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1), while SAE J404 8620 is commonly used for case hardened gears, cams, pins, shafts.
EN 10084 20NiCrMoS2-2 is defined under European Standard (EN), originating from Europe, while SAE J404 8620 is defined under SAE International, originating from United States.
As per chemical composition, EN 10084 20NiCrMoS2-2 vs SAE J404 8620 is a 88.2% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a strong match overall at 88.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10084 20NiCrMoS2-2
SAE J404 8620
Condition
Soft annealed
Not specified
Hardenability
+H band at 1.5 mm from the quenched end: 41 to 49 HRC
Not specified
Hardness
Soft annealed: 212 HB max
Not specified
Typical Applications
EN 10084 20NiCrMoS2-2
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
SAE J404 8620
Case hardened gears, cams, pins, shafts
Can EN 10084 20NiCrMoS2-2 Be Substituted With SAE J404 8620?
EN 10084 20NiCrMoS2-2 and SAE J404 8620 overlap closely enough on chemistry and mechanical properties that SAE J404 8620 is often considered as a substitute for EN 10084 20NiCrMoS2-2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between EN 10084 20NiCrMoS2-2 and SAE J404 8620?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10084 20NiCrMoS2-2 be substituted with SAE J404 8620?
EN 10084 20NiCrMoS2-2 and SAE J404 8620 overlap closely enough on chemistry and mechanical properties that SAE J404 8620 is often considered as a substitute for EN 10084 20NiCrMoS2-2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.