Strong Match — 90.4% match
based on chemical composition and mechanical property overlap.
IS 6911 X04Cr17Ni12Mo2 (IS 6911:1992) and BS 970 (Part 3) 320S31 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Stainless Steel category.
IS 6911 X04Cr17Ni12Mo2 is typically used for stainless and heat-resisting steel plate, sheet and strip (clause 1.1), while BS 970 (Part 3) 320S31 is commonly 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).
IS 6911 X04Cr17Ni12Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 320S31 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, IS 6911 X04Cr17Ni12Mo2 vs BS 970 (Part 3) 320S31 is a 90.4% 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 90.4%.
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 X04Cr17Ni12Mo2
BS 970 (Part 3) 320S31
Bend Test (180 deg)
Not required
Not specified
Elongation (50 mm, annealed)
>=40%
Not specified
Hardness (annealed, max)
192 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 X04Cr17Ni12Mo2
Stainless and heat-resisting steel plate, sheet and strip (clause 1.1)
BS 970 (Part 3) 320S31
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)
Can IS 6911 X04Cr17Ni12Mo2 Be Substituted With BS 970 (Part 3) 320S31?
IS 6911 X04Cr17Ni12Mo2 and BS 970 (Part 3) 320S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 320S31 is often considered as a substitute for IS 6911 X04Cr17Ni12Mo2 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 X04Cr17Ni12Mo2 and BS 970 (Part 3) 320S31?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 6911 X04Cr17Ni12Mo2 be substituted with BS 970 (Part 3) 320S31?
IS 6911 X04Cr17Ni12Mo2 and BS 970 (Part 3) 320S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 320S31 is often considered as a substitute for IS 6911 X04Cr17Ni12Mo2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.