Strong Match — 92.2% match
based on chemical composition and mechanical property overlap.
ASTM A959 304H (ASTM A959:2011) and SAE 30304 (SAE J405) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 304H is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while SAE 30304 is commonly used for used for chemical equipment, food processing machinery, architectural panels, fasteners, pressure vessels, and heat exchangers..
ASTM A959 304H is defined under ASTM International, originating from United States, while SAE 30304 is defined under SAE International, originating from United States.
As per chemical composition, ASTM A959 304H vs SAE 30304 is a 92.2% 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 92.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A959 304H
SAE 30304
Tensile Strength
Not specified
515-690 MPa
Yield Strength
Not specified
205 MPa min
Elongation
Not specified
40% min
Hardness
Not specified
201 HB max
Typical Applications
ASTM A959 304H
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
SAE 30304
Used for chemical equipment, food processing machinery, architectural panels, fasteners, pressure vessels, and heat exchangers.
Can ASTM A959 304H Be Substituted With SAE 30304?
ASTM A959 304H and SAE 30304 overlap closely enough on chemistry and mechanical properties that SAE 30304 is often considered as a substitute for ASTM A959 304H 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 ASTM A959 304H and SAE 30304?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 304H be substituted with SAE 30304?
ASTM A959 304H and SAE 30304 overlap closely enough on chemistry and mechanical properties that SAE 30304 is often considered as a substitute for ASTM A959 304H in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.