Strong Match — 98.3% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 3) 302S31 (BS 970 (Part 3):1991) and IS 6911 X07Cr18Ni9 (IS 6911:1992) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 3) 302S31 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (table 18), while IS 6911 X07Cr18Ni9 is commonly used for stainless and heat-resisting steel plate, sheet and strip (clause 1.1).
BS 970 (Part 3) 302S31 is defined under British Standards (BS), originating from United Kingdom, while IS 6911 X07Cr18Ni9 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 (Part 3) 302S31 vs IS 6911 X07Cr18Ni9 is a 98.3% 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 98.3%.
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 3) 302S31
IS 6911 X07Cr18Ni9
Bend Test (180 deg)
Not specified
Not required
Elongation (50 mm, annealed)
Not specified
>=40%
Hardness (annealed, max)
Not specified
192 HBS, 92 HRB
Tensile Strength (annealed)
Not specified
>=400 MPa
Yield Strength (0.2% proof, annealed)
Not specified
>=210 MPa
Typical Applications
BS 970 (Part 3) 302S31
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (Table 18)
IS 6911 X07Cr18Ni9
Stainless and heat-resisting steel plate, sheet and strip (clause 1.1)
Can BS 970 (Part 3) 302S31 Be Substituted With IS 6911 X07Cr18Ni9?
BS 970 (Part 3) 302S31 and IS 6911 X07Cr18Ni9 overlap closely enough on chemistry and mechanical properties that IS 6911 X07Cr18Ni9 is often considered as a substitute for BS 970 (Part 3) 302S31 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 3) 302S31 and IS 6911 X07Cr18Ni9?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 302S31 be substituted with IS 6911 X07Cr18Ni9?
BS 970 (Part 3) 302S31 and IS 6911 X07Cr18Ni9 overlap closely enough on chemistry and mechanical properties that IS 6911 X07Cr18Ni9 is often considered as a substitute for BS 970 (Part 3) 302S31 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.