BS 970 (Part 3) 316S33 vs IS 1570 (Part 7) 6Cr17Ni12Mo2H
Strong Match — 89.4% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 3) 316S33 (BS 970 (Part 3):1991) and IS 1570 (Part 7) 6Cr17Ni12Mo2H (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 3) 316S33 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 1570 (Part 7) 6Cr17Ni12Mo2H is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature.
BS 970 (Part 3) 316S33 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 6Cr17Ni12Mo2H is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 (Part 3) 316S33 vs IS 1570 (Part 7) 6Cr17Ni12Mo2H is a 89.4% 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 89.4%.
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) 316S33
IS 1570 (Part 7) 6Cr17Ni12Mo2H
Tensile Strength
Not specified
510-710 MPa
Yield Strength
Not specified
>=205 MPa (0.2 % proof stress)
Elongation
Not specified
>=30%
Condition
Not specified
Pipes, bars, forgings, plates, Q, thickness - (first row of Table 3)
Typical Applications
BS 970 (Part 3) 316S33
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 1570 (Part 7) 6Cr17Ni12Mo2H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Can BS 970 (Part 3) 316S33 Be Substituted With IS 1570 (Part 7) 6Cr17Ni12Mo2H?
BS 970 (Part 3) 316S33 and IS 1570 (Part 7) 6Cr17Ni12Mo2H overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 7) 6Cr17Ni12Mo2H is often considered as a substitute for BS 970 (Part 3) 316S33 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) 316S33 and IS 1570 (Part 7) 6Cr17Ni12Mo2H?
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) 316S33 be substituted with IS 1570 (Part 7) 6Cr17Ni12Mo2H?
BS 970 (Part 3) 316S33 and IS 1570 (Part 7) 6Cr17Ni12Mo2H overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 7) 6Cr17Ni12Mo2H is often considered as a substitute for BS 970 (Part 3) 316S33 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.