Close Alternative — 79.3% match
based on chemical composition and mechanical property overlap.
ASTM A959 409 (ASTM A959:2011) and IS 1570 (Part 7) 12Cr13H (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 409 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), 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.
ASTM A959 409 is defined under ASTM International, originating from United States, while IS 1570 (Part 7) 12Cr13H is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, ASTM A959 409 vs IS 1570 (Part 7) 12Cr13H is a 79.3% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 79.3%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A959 409
IS 1570 (Part 7) 12Cr13H
Tensile Strength
Not specified
470-670 MPa
Yield Strength
Not specified
>=265 MPa (0.2 % proof stress)
Elongation
Not specified
>=20%
Condition
Not specified
Bars, forgings, plates, A, thickness up to 160 (first row of Table 3)
Typical Applications
ASTM A959 409
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
IS 1570 (Part 7) 12Cr13H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Can ASTM A959 409 Be Substituted With IS 1570 (Part 7) 12Cr13H?
ASTM A959 409 and IS 1570 (Part 7) 12Cr13H are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between ASTM A959 409 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 ASTM A959 409 be substituted with IS 1570 (Part 7) 12Cr13H?
ASTM A959 409 and IS 1570 (Part 7) 12Cr13H are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.