Strong Match — 89.3% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 431S29 (BS 970 (Part 1):1983) and IS 6911 X15Cr16Ni2 (IS 6911:1992) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 1) 431S29 is typically used for stainless and heat resisting steel for mechanical and allied engineering purposes (table 13)., while IS 6911 X15Cr16Ni2 is commonly used for stainless and heat-resisting steel plate, sheet and strip (clause 1.1).
BS 970 (Part 1) 431S29 is defined under British Standards (BS), originating from United Kingdom, while IS 6911 X15Cr16Ni2 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 (Part 1) 431S29 vs IS 6911 X15Cr16Ni2 is a 89.3% 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 89.3%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
BS 970 (Part 1) 431S29
IS 6911 X15Cr16Ni2
Elongation (50 mm, annealed)
Not specified
>=10%
Hardness (annealed, max)
Not specified
262 HBS
Tensile Strength (annealed)
Not specified
>=830 MPa
Yield Strength (0.2% proof, annealed)
Not specified
>=640 MPa
Typical Applications
BS 970 (Part 1) 431S29
Stainless and heat resisting steel for mechanical and allied engineering purposes (Table 13).
IS 6911 X15Cr16Ni2
Stainless and heat-resisting steel plate, sheet and strip (clause 1.1)
Can BS 970 (Part 1) 431S29 Be Substituted With IS 6911 X15Cr16Ni2?
BS 970 (Part 1) 431S29 and IS 6911 X15Cr16Ni2 overlap closely enough on chemistry and mechanical properties that IS 6911 X15Cr16Ni2 is often considered as a substitute for BS 970 (Part 1) 431S29 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 BS 970 (Part 1) 431S29 and IS 6911 X15Cr16Ni2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 1) 431S29 be substituted with IS 6911 X15Cr16Ni2?
BS 970 (Part 1) 431S29 and IS 6911 X15Cr16Ni2 overlap closely enough on chemistry and mechanical properties that IS 6911 X15Cr16Ni2 is often considered as a substitute for BS 970 (Part 1) 431S29 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.