Strong Match — 87% match
based on chemical composition and mechanical property overlap.
IS 6911 X15Cr24Ni13 (IS 6911:1992) and ASTM A959 309Cb (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
IS 6911 X15Cr24Ni13 is typically used for stainless and heat-resisting steel plate, sheet and strip (clause 1.1), while ASTM A959 309Cb is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1).
IS 6911 X15Cr24Ni13 is defined under Bureau of Indian Standards (IS), originating from India, while ASTM A959 309Cb is defined under ASTM International, originating from United States.
As per chemical composition, IS 6911 X15Cr24Ni13 vs ASTM A959 309Cb is a 87% 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 87%.
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 X15Cr24Ni13
ASTM A959 309Cb
Bend Test (180 deg)
Not required
Not specified
Elongation (50 mm, annealed)
>=40%
Not specified
Hardness (annealed, max)
217 HBS, 95 HRB
Not specified
Tensile Strength (annealed)
>=490 MPa
Not specified
Yield Strength (0.2% proof, annealed)
>=210 MPa
Not specified
Typical Applications
IS 6911 X15Cr24Ni13
Stainless and heat-resisting steel plate, sheet and strip (clause 1.1)
ASTM A959 309Cb
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can IS 6911 X15Cr24Ni13 Be Substituted With ASTM A959 309Cb?
IS 6911 X15Cr24Ni13 and ASTM A959 309Cb overlap closely enough on chemistry and mechanical properties that ASTM A959 309Cb is often considered as a substitute for IS 6911 X15Cr24Ni13 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 X15Cr24Ni13 and ASTM A959 309Cb?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 6911 X15Cr24Ni13 be substituted with ASTM A959 309Cb?
IS 6911 X15Cr24Ni13 and ASTM A959 309Cb overlap closely enough on chemistry and mechanical properties that ASTM A959 309Cb is often considered as a substitute for IS 6911 X15Cr24Ni13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.