BS 970 (Part 1) 303S42 vs IS 1570 (Part 7) 11Cr17Ni13W3TiH
Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 303S42 (BS 970 (Part 1):1983) and IS 1570 (Part 7) 11Cr17Ni13W3TiH (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 1) 303S42 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 1570 (Part 7) 11Cr17Ni13W3TiH 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 1) 303S42 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 11Cr17Ni13W3TiH is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 (Part 1) 303S42 vs IS 1570 (Part 7) 11Cr17Ni13W3TiH is a 55.1% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
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) 303S42
IS 1570 (Part 7) 11Cr17Ni13W3TiH
Tensile Strength
Not specified
600-800 MPa
Yield Strength
Not specified
>=390 MPa (0.2 % proof stress)
Elongation
Not specified
>=25%
Condition
Not specified
Bars, forgings, pipes, hot cold worked, thickness up to 60 (first row of Table 3)
Typical Applications
BS 970 (Part 1) 303S42
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
IS 1570 (Part 7) 11Cr17Ni13W3TiH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
BS 970 (Part 1) 303S42 specifies Mo, Se which are not specified for IS 1570 (Part 7) 11Cr17Ni13W3TiH.
IS 1570 (Part 7) 11Cr17Ni13W3TiH specifies W, Ti, B which are not specified for BS 970 (Part 1) 303S42.
Can BS 970 (Part 1) 303S42 Be Substituted With IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 (Part 1) 303S42 and IS 1570 (Part 7) 11Cr17Ni13W3TiH share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between BS 970 (Part 1) 303S42 and IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 (Part 1) 303S42 specifies Mo, Se which are not specified for IS 1570 (Part 7) 11Cr17Ni13W3TiH. IS 1570 (Part 7) 11Cr17Ni13W3TiH specifies W, Ti, B which are not specified for BS 970 (Part 1) 303S42.
Can BS 970 (Part 1) 303S42 be substituted with IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 (Part 1) 303S42 and IS 1570 (Part 7) 11Cr17Ni13W3TiH share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.