IS 11169 (Part 2) X04Cr18Ni9Cu vs BS 970 (Part 1) 304S31
Strong Match — 92% match
based on chemical composition and mechanical property overlap.
IS 11169 (Part 2) X04Cr18Ni9Cu (IS 11169 (Part 2):2023) and BS 970 (Part 1) 304S31 (BS 970 (Part 1):1983) are both steel grades.
Both fall under the Stainless Steel category.
IS 11169 (Part 2) X04Cr18Ni9Cu is typically used for cold heading and cold extrusion of stainless steel parts; the standard covers wires, wire rods and bars of 0.8 to 50 mm (clause 1.1, table 11), while BS 970 (Part 1) 304S31 is commonly used for austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (table 14, with table 15 for the cold drawn condition)..
IS 11169 (Part 2) X04Cr18Ni9Cu is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 304S31 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, IS 11169 (Part 2) X04Cr18Ni9Cu vs BS 970 (Part 1) 304S31 is a 92% 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%.
Frequently Compared With IS 11169 (Part 2) X04Cr18Ni9Cu:
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 11169 (Part 2) X04Cr18Ni9Cu
BS 970 (Part 1) 304S31
Reduction of Area, cold drawn and solution annealed (+AT+C+AT)
>=60% (0.8 to 5 mm) / >=65% (over 5 to 25 mm)
Not specified
Tensile Strength, cold drawn and solution annealed (+AT+C+AT)
<=710 MPa (0.8 to 2 mm) / <=700 MPa (over 2 to 5 mm) / <=650 MPa (over 5 to 25 mm)
Not specified
Typical Applications
IS 11169 (Part 2) X04Cr18Ni9Cu
Cold heading and cold extrusion of stainless steel parts; the standard covers wires, wire rods and bars of 0.8 to 50 mm (clause 1.1, Table 11)
BS 970 (Part 1) 304S31
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
Key Differences
IS 11169 (Part 2) X04Cr18Ni9Cu specifies Cu, N which are not specified for BS 970 (Part 1) 304S31.
Can IS 11169 (Part 2) X04Cr18Ni9Cu Be Substituted With BS 970 (Part 1) 304S31?
IS 11169 (Part 2) X04Cr18Ni9Cu and BS 970 (Part 1) 304S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 304S31 is often considered as a substitute for IS 11169 (Part 2) X04Cr18Ni9Cu 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 11169 (Part 2) X04Cr18Ni9Cu and BS 970 (Part 1) 304S31?
IS 11169 (Part 2) X04Cr18Ni9Cu specifies Cu, N which are not specified for BS 970 (Part 1) 304S31.
Can IS 11169 (Part 2) X04Cr18Ni9Cu be substituted with BS 970 (Part 1) 304S31?
IS 11169 (Part 2) X04Cr18Ni9Cu and BS 970 (Part 1) 304S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 304S31 is often considered as a substitute for IS 11169 (Part 2) X04Cr18Ni9Cu in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.