Minimal Match — 47.1% match
based on chemical composition and mechanical property overlap.
IS 6911 X20Cr25Ni20 (IS 6911:1992) and IS 1570 (Part 7) 12Cr13H (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
IS 6911 X20Cr25Ni20 is typically used for stainless and heat-resisting steel plate, sheet and strip (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.
IS 6911 X20Cr25Ni20 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 12Cr13H is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 6911 X20Cr25Ni20 vs IS 1570 (Part 7) 12Cr13H is a 70.6% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 47.1%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 6911 X20Cr25Ni20
IS 1570 (Part 7) 12Cr13H
Bend Test (180 deg)
Not required
Not specified
Elongation (50 mm, annealed)
>=40%
Not specified
Hardness (annealed, max)
217 HBS, 95 HRB
Not specified
Tensile Strength (annealed)
>=490 MPa
Not specified
Yield Strength (0.2% proof, annealed)
>=210 MPa
Not specified
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
IS 6911 X20Cr25Ni20
Stainless and heat-resisting steel plate, sheet and strip (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 IS 6911 X20Cr25Ni20 Be Substituted With IS 1570 (Part 7) 12Cr13H?
IS 6911 X20Cr25Ni20 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 IS 6911 X20Cr25Ni20 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 IS 6911 X20Cr25Ni20 be substituted with IS 1570 (Part 7) 12Cr13H?
IS 6911 X20Cr25Ni20 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.