Close Alternative — 75.6% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S21400 (ASTM A240/A240M:2025) and IS 6603 X13Mn13Cr18N (IS 6603:2024) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S21400 is typically used for pressure vessels and general applications (plate, sheet and strip), while IS 6603 X13Mn13Cr18N is commonly used for general purposes, semi-finished products, bars, wire rods and bright bars.
ASTM A240/A240M S21400 is defined under ASTM International, originating from United States, while IS 6603 X13Mn13Cr18N is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, ASTM A240/A240M S21400 vs IS 6603 X13Mn13Cr18N is a 75.6% 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 75.6%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A240/A240M S21400
IS 6603 X13Mn13Cr18N
Tensile Strength
Not specified
>=690 MPa
Yield Strength
Not specified
>=380 MPa
Elongation
Not specified
>=30%
Condition
Not specified
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, all sizes; Yield Strength is Rp0.2, Elongation is A (longitudinal)
Typical Applications
ASTM A240/A240M S21400
Pressure vessels and general applications (plate, sheet and strip)
IS 6603 X13Mn13Cr18N
General purposes, semi-finished products, bars, wire rods and bright bars
Can ASTM A240/A240M S21400 Be Substituted With IS 6603 X13Mn13Cr18N?
ASTM A240/A240M S21400 and IS 6603 X13Mn13Cr18N 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 A240/A240M S21400 and IS 6603 X13Mn13Cr18N?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S21400 be substituted with IS 6603 X13Mn13Cr18N?
ASTM A240/A240M S21400 and IS 6603 X13Mn13Cr18N 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.