Strong Match — 95% match
based on chemical composition and mechanical property overlap.
ASTM A959 321H (ASTM A959:2011) and ASTM A959 321 (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 321H is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A959 321 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1).
ASTM A959 321H is defined under ASTM International, originating from United States, while ASTM A959 321 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A959 321H vs ASTM A959 321 is a 95% 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 95%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
ASTM A959 321H
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A959 321
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can ASTM A959 321H Be Substituted With ASTM A959 321?
ASTM A959 321H and ASTM A959 321 overlap closely enough on chemistry and mechanical properties that ASTM A959 321 is often considered as a substitute for ASTM A959 321H 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 321H and ASTM A959 321?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 321H be substituted with ASTM A959 321?
ASTM A959 321H and ASTM A959 321 overlap closely enough on chemistry and mechanical properties that ASTM A959 321 is often considered as a substitute for ASTM A959 321H in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.