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IS 6603 X07Cr17Ni7Al vs BS 970 (Part 3) 304S31

Close Alternative — 75.3% match based on chemical composition and mechanical property overlap.

IS 6603 X07Cr17Ni7Al (IS 6603:2024) and BS 970 (Part 3) 304S31 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Stainless Steel category. IS 6603 X07Cr17Ni7Al is typically used for general purposes, semi-finished products, bars, wire rods and bright bars, while BS 970 (Part 3) 304S31 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (table 18). IS 6603 X07Cr17Ni7Al is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 304S31 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 6603 X07Cr17Ni7Al vs BS 970 (Part 3) 304S31 is a 75.3% 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 75.3%.

Frequently Compared With IS 6603 X07Cr17Ni7Al:
GOST 5632 06Kh23N28 IS 1570 (Part 7) 12Cr12MoVH GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo EN 10088-1 1.4301 IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
75.3%
MECHANICAL MATCH
No shared data
OVERALL
75.3%
Specifications
Property IS 6603 X07Cr17Ni7Al BS 970 (Part 3) 304S31
Standard IS 6603:2024 BS 970 (Part 3):1991
Category Stainless Steel Stainless Steel
C (%) <=0.09 <=0.07
Si (%) <=0.70 <=1.0
Mn (%) <=1.00 <=2.0
P (%) <=0.040 <=0.045
S (%) <=0.015 <=0.030
Cr (%) 16.0-18.0 17.0-19.0
Ni (%) 6.5-7.8 8.0-11.0
Al (%) 0.70-1.50 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 6603 X07Cr17Ni7Al BS 970 (Part 3) 304S31
Tensile Strength <=850 MPa Not specified
Hardness <=255 HB Not specified
Condition Solution annealed (+AT), conditions 1C, 1E, 1D, 1X, 1G and 2D; hardness as printed Not specified
Typical Applications
IS 6603 X07Cr17Ni7Al
General purposes, semi-finished products, bars, wire rods and bright bars
BS 970 (Part 3) 304S31
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (Table 18)
Key Differences
Can IS 6603 X07Cr17Ni7Al Be Substituted With BS 970 (Part 3) 304S31?
IS 6603 X07Cr17Ni7Al and BS 970 (Part 3) 304S31 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.
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IS 6603 X07Cr17Ni7Al
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BS 970 (Part 3) 304S31
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Frequently Asked Questions
What is the difference between IS 6603 X07Cr17Ni7Al and BS 970 (Part 3) 304S31?
IS 6603 X07Cr17Ni7Al specifies Al which is not specified for BS 970 (Part 3) 304S31.
Can IS 6603 X07Cr17Ni7Al be substituted with BS 970 (Part 3) 304S31?
IS 6603 X07Cr17Ni7Al and BS 970 (Part 3) 304S31 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.