Minimal Match — 33.8% match
based on chemical composition and mechanical property overlap.
BS 970 EN58A (BS 970:1955) and IS 1570 (Part 7) 12Cr12Ni2Mo (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 EN58A is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength of 35 tons/sq in min., while IS 1570 (Part 7) 12Cr12Ni2Mo is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature.
BS 970 EN58A is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 12Cr12Ni2Mo is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 EN58A vs IS 1570 (Part 7) 12Cr12Ni2Mo is a 50.7% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 33.8%.
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 EN58A
IS 1570 (Part 7) 12Cr12Ni2Mo
Tensile Strength
≥541 MPa (35 tons/sq in, converted)
930-1130 MPa
Yield Strength
≥185 MPa (12 tons/sq in, converted)
>=785 MPa (0.2 % proof stress)
Elongation
≥30%
>=14%
Condition
, ruling section 6 in (lowest-strength condition of the standard)
Bars, forgings, Q+T, thickness up to 150 (first row of Table 3)
Typical Applications
BS 970 EN58A
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 35 tons/sq in min.
IS 1570 (Part 7) 12Cr12Ni2Mo
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
IS 1570 (Part 7) 12Cr12Ni2Mo specifies Mo, V, N which are not specified for BS 970 EN58A.
Can BS 970 EN58A Be Substituted With IS 1570 (Part 7) 12Cr12Ni2Mo?
BS 970 EN58A and IS 1570 (Part 7) 12Cr12Ni2Mo 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 EN58A and IS 1570 (Part 7) 12Cr12Ni2Mo?
IS 1570 (Part 7) 12Cr12Ni2Mo specifies Mo, V, N which are not specified for BS 970 EN58A.
Can BS 970 EN58A be substituted with IS 1570 (Part 7) 12Cr12Ni2Mo?
BS 970 EN58A and IS 1570 (Part 7) 12Cr12Ni2Mo 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.