Strong Match — 96.7% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 310S31 (BS 970 (Part 1):1983) and IS 6603 X12Cr25Ni20 (IS 6603:2024) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 1) 310S31 is typically used for austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (table 14, with table 15 for the cold drawn condition)., while IS 6603 X12Cr25Ni20 is commonly used for general purposes, semi-finished products, bars, wire rods and bright bars.
BS 970 (Part 1) 310S31 is defined under British Standards (BS), originating from United Kingdom, while IS 6603 X12Cr25Ni20 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 (Part 1) 310S31 vs IS 6603 X12Cr25Ni20 is a 96.7% 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 96.7%.
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) 310S31
IS 6603 X12Cr25Ni20
Tensile Strength
Not specified
500-700 MPa
Yield Strength
Not specified
>=210 MPa
Elongation
Not specified
>=35%
Condition
Not specified
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 160 mm; Yield Strength is Rp0.2, Elongation is A (longitudinal)
Typical Applications
BS 970 (Part 1) 310S31
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
IS 6603 X12Cr25Ni20
General purposes, semi-finished products, bars, wire rods and bright bars
Can BS 970 (Part 1) 310S31 Be Substituted With IS 6603 X12Cr25Ni20?
BS 970 (Part 1) 310S31 and IS 6603 X12Cr25Ni20 overlap closely enough on chemistry and mechanical properties that IS 6603 X12Cr25Ni20 is often considered as a substitute for BS 970 (Part 1) 310S31 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) 310S31 and IS 6603 X12Cr25Ni20?
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) 310S31 be substituted with IS 6603 X12Cr25Ni20?
BS 970 (Part 1) 310S31 and IS 6603 X12Cr25Ni20 overlap closely enough on chemistry and mechanical properties that IS 6603 X12Cr25Ni20 is often considered as a substitute for BS 970 (Part 1) 310S31 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.