Strong Match — 88.3% match
based on chemical composition and mechanical property overlap.
IS 6911 X20Cr13 (IS 6911:1992) and BS 970 (Part 1) 410S21 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Stainless Steel category.
IS 6911 X20Cr13 is typically used for stainless and heat-resisting steel plate, sheet and strip (clause 1.1), while BS 970 (Part 1) 410S21 is commonly used for ferritic and martensitic stainless and heat resisting steel (section five).
IS 6911 X20Cr13 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 410S21 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, IS 6911 X20Cr13 vs BS 970 (Part 1) 410S21 is a 88.3% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a strong match overall at 88.3%.
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 X20Cr13
BS 970 (Part 1) 410S21
Elongation (50 mm, annealed)
>=14%
Not specified
Hardness (annealed, max)
229 HBS
Not specified
Tensile Strength (annealed)
>=690 MPa
Not specified
Yield Strength (0.2% proof, annealed)
>=490 MPa
Not specified
Typical Applications
IS 6911 X20Cr13
Stainless and heat-resisting steel plate, sheet and strip (clause 1.1)
BS 970 (Part 1) 410S21
Ferritic and martensitic stainless and heat resisting steel (section five)
Can IS 6911 X20Cr13 Be Substituted With BS 970 (Part 1) 410S21?
IS 6911 X20Cr13 and BS 970 (Part 1) 410S21 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 410S21 is often considered as a substitute for IS 6911 X20Cr13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between IS 6911 X20Cr13 and BS 970 (Part 1) 410S21?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 6911 X20Cr13 be substituted with BS 970 (Part 1) 410S21?
IS 6911 X20Cr13 and BS 970 (Part 1) 410S21 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 410S21 is often considered as a substitute for IS 6911 X20Cr13 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.