Strong Match — 91% match
based on chemical composition and mechanical property overlap.
AISI 5140 and SAE J404 5150 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
AISI 5140 is typically used for used for gears, shafts, spindles, bolts, machinery parts, and automotive components., while SAE J404 5150 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope.
AISI 5140 is defined under AISI, originating from United States, while SAE J404 5150 is defined under SAE International, originating from United States.
As per chemical composition, AISI 5140 vs SAE J404 5150 is a 91% 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 91%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
AISI 5140
SAE J404 5150
Condition
Quenched & Tempered
Not specified
Tensile Strength
850-1000 MPa
Not specified
Yield Strength
650-800 MPa
Not specified
Elongation
12-18%
Not specified
Hardness
240-300 HB
Not specified
Typical Applications
AISI 5140
Used for gears, shafts, spindles, bolts, machinery parts, and automotive components.
SAE J404 5150
Chemistry-only alloy steel grade; see the composition notes for product scope
Can AISI 5140 Be Substituted With SAE J404 5150?
AISI 5140 and SAE J404 5150 overlap closely enough on chemistry and mechanical properties that SAE J404 5150 is often considered as a substitute for AISI 5140 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 AISI 5140 and SAE J404 5150?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AISI 5140 be substituted with SAE J404 5150?
AISI 5140 and SAE J404 5150 overlap closely enough on chemistry and mechanical properties that SAE J404 5150 is often considered as a substitute for AISI 5140 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.