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BS 970 (Part 1) 431S29 vs IS 6603 X17Cr16Ni2

Strong Match — 87.8% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 431S29 (BS 970 (Part 1):1991) and IS 6603 X17Cr16Ni2 (IS 6603:2024) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 431S29 is typically used for ferritic and martensitic stainless and heat resisting steel (section five), while IS 6603 X17Cr16Ni2 is commonly used for general purposes, semi-finished products, bars, wire rods and bright bars. BS 970 (Part 1) 431S29 is defined under British Standards (BS), originating from United Kingdom, while IS 6603 X17Cr16Ni2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 431S29 vs IS 6603 X17Cr16Ni2 is a 87.8% 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 87.8%.

Frequently Compared With BS 970 (Part 1) 431S29:
IS 1570 (Part 7) 11Cr17Ni13W3TiH ASTM A959 205 GOST 5632 08X18H10 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoVH ASTM A959 .- GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
87.8%
MECHANICAL MATCH
No shared data
OVERALL
87.8%
Specifications
Property BS 970 (Part 1) 431S29 IS 6603 X17Cr16Ni2
Standard BS 970 (Part 1):1991 IS 6603:2024
Category Stainless Steel Stainless Steel
C (%) 0.12-0.20 0.12-0.22
Si (%) <=1.0 <=1.00
Mn (%) <=1.0 <=1.50
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Cr (%) 15.0-18.0 15.0-17.0
Ni (%) 2.0-3.0 1.25-2.50
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 (Part 1) 431S29 IS 6603 X17Cr16Ni2
Tensile Strength Not specified <=950 MPa
Hardness Not specified <=295 HB
Condition Not specified Soft annealed (+A), conditions 1C, 1E, 1D, 1X, 1G and 2D, all sizes; hardness as printed
Typical Applications
BS 970 (Part 1) 431S29
Ferritic and martensitic stainless and heat resisting steel (section five)
IS 6603 X17Cr16Ni2
General purposes, semi-finished products, bars, wire rods and bright bars
Can BS 970 (Part 1) 431S29 Be Substituted With IS 6603 X17Cr16Ni2?
BS 970 (Part 1) 431S29 and IS 6603 X17Cr16Ni2 overlap closely enough on chemistry and mechanical properties that IS 6603 X17Cr16Ni2 is often considered as a substitute for BS 970 (Part 1) 431S29 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 (Part 1) 431S29
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IS 6603 X17Cr16Ni2
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 431S29 and IS 6603 X17Cr16Ni2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 1) 431S29 be substituted with IS 6603 X17Cr16Ni2?
BS 970 (Part 1) 431S29 and IS 6603 X17Cr16Ni2 overlap closely enough on chemistry and mechanical properties that IS 6603 X17Cr16Ni2 is often considered as a substitute for BS 970 (Part 1) 431S29 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.