Minimal Match — 50.1% match
based on chemical composition and mechanical property overlap.
BS 970 EN57 (BS 970:1955) and IS 1570 (Part 7) 12Cr13H (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 EN57 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength of 55 tons/sq in min., while IS 1570 (Part 7) 12Cr13H is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature.
BS 970 EN57 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 12Cr13H is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 EN57 vs IS 1570 (Part 7) 12Cr13H is a 75.2% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 50.1%.
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 EN57
IS 1570 (Part 7) 12Cr13H
Tensile Strength
≥849 MPa (55 tons/sq in, converted)
470-670 MPa
Yield Strength
≥680 MPa (44 tons/sq in, converted)
>=265 MPa (0.2 % proof stress)
Elongation
≥15%
>=20%
Hardness
248 HB
Not specified
Condition
Hardened and tempered (ruling 6), ruling section 6 in (lowest-strength condition of the standard)
Bars, forgings, plates, A, thickness up to 160 (first row of Table 3)
Typical Applications
BS 970 EN57
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 55 tons/sq in min.
IS 1570 (Part 7) 12Cr13H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Can BS 970 EN57 Be Substituted With IS 1570 (Part 7) 12Cr13H?
BS 970 EN57 and IS 1570 (Part 7) 12Cr13H 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 EN57 and IS 1570 (Part 7) 12Cr13H?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN57 be substituted with IS 1570 (Part 7) 12Cr13H?
BS 970 EN57 and IS 1570 (Part 7) 12Cr13H 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.