Strong Match — 92.8% match
based on chemical composition and mechanical property overlap.
IS 6911 X04Cr19Ni9 (IS 6911:1992) and ASTM A959 XM-21 (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
IS 6911 X04Cr19Ni9 is typically used for used in food equipment, chemical processing units, kitchenware, tanks, piping, and architectural applications., while ASTM A959 XM-21 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1).
IS 6911 X04Cr19Ni9 is defined under Bureau of Indian Standards (IS), originating from India, while ASTM A959 XM-21 is defined under ASTM International, originating from United States.
As per chemical composition, IS 6911 X04Cr19Ni9 vs ASTM A959 XM-21 is a 92.8% 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 92.8%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 6911 X04Cr19Ni9
ASTM A959 XM-21
Bend Test (180 deg)
Not required
Not specified
Elongation (50 mm, annealed)
>=40%
Not specified
Hardness (annealed, max)
192 HBS, 92 HRB
Not specified
Tensile Strength (annealed)
>=400 MPa
Not specified
Yield Strength (0.2% proof, annealed)
>=200 MPa
Not specified
Typical Applications
IS 6911 X04Cr19Ni9
Used in food equipment, chemical processing units, kitchenware, tanks, piping, and architectural applications.
ASTM A959 XM-21
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
ASTM A959 XM-21 specifies N which is not specified for IS 6911 X04Cr19Ni9.
Can IS 6911 X04Cr19Ni9 Be Substituted With ASTM A959 XM-21?
IS 6911 X04Cr19Ni9 and ASTM A959 XM-21 overlap closely enough on chemistry and mechanical properties that ASTM A959 XM-21 is often considered as a substitute for IS 6911 X04Cr19Ni9 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 IS 6911 X04Cr19Ni9 and ASTM A959 XM-21?
ASTM A959 XM-21 specifies N which is not specified for IS 6911 X04Cr19Ni9.
Can IS 6911 X04Cr19Ni9 be substituted with ASTM A959 XM-21?
IS 6911 X04Cr19Ni9 and ASTM A959 XM-21 overlap closely enough on chemistry and mechanical properties that ASTM A959 XM-21 is often considered as a substitute for IS 6911 X04Cr19Ni9 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.