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IS 1570 (Part 7) 6Cr17Ni12Mo2H vs BS 970 (Part 1) 320S31

Strong Match — 90.4% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 7) 6Cr17Ni12Mo2H (IS 1570 (Part 7):1992) and BS 970 (Part 1) 320S31 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Stainless Steel category. IS 1570 (Part 7) 6Cr17Ni12Mo2H is typically used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature, while BS 970 (Part 1) 320S31 is commonly used for austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (table 14, with table 15 for the cold drawn condition).. IS 1570 (Part 7) 6Cr17Ni12Mo2H is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 320S31 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 7) 6Cr17Ni12Mo2H vs BS 970 (Part 1) 320S31 is a 90.4% 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 90.4%.

Frequently Compared With IS 1570 (Part 7) 6Cr17Ni12Mo2H:
GOST 5632 12Kh13 GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH EN 10088-1 1.4301 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Match Breakdown
CHEMISTRY MATCH
90.4%
MECHANICAL MATCH
No shared data
OVERALL
90.4%
Specifications
Property IS 1570 (Part 7) 6Cr17Ni12Mo2H BS 970 (Part 1) 320S31
Standard IS 1570 (Part 7):1992 BS 970 (Part 1):1983
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.08
Si (%) <=1.00 <=1.0
Mn (%) <=2.00 <=2.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Cr (%) 16.00-18.00 16.5-18.5
Ni (%) 10.00-14.00 11.0-14.0
Mo (%) 2.00-3.00 2.00-2.50
Ti (%) Not specified 5C-0.80
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 7) 6Cr17Ni12Mo2H BS 970 (Part 1) 320S31
Tensile Strength 510-710 MPa Not specified
Yield Strength >=205 MPa (0.2 % proof stress) Not specified
Elongation >=30% Not specified
Condition Pipes, bars, forgings, plates, Q, thickness - (first row of Table 3) Not specified
Typical Applications
IS 1570 (Part 7) 6Cr17Ni12Mo2H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
BS 970 (Part 1) 320S31
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
Key Differences
Can IS 1570 (Part 7) 6Cr17Ni12Mo2H Be Substituted With BS 970 (Part 1) 320S31?
IS 1570 (Part 7) 6Cr17Ni12Mo2H and BS 970 (Part 1) 320S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 320S31 is often considered as a substitute for IS 1570 (Part 7) 6Cr17Ni12Mo2H in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
IS 1570 (Part 7) 6Cr17Ni12Mo2H
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BS 970 (Part 1) 320S31
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Frequently Asked Questions
What is the difference between IS 1570 (Part 7) 6Cr17Ni12Mo2H and BS 970 (Part 1) 320S31?
BS 970 (Part 1) 320S31 specifies Ti which is not specified for IS 1570 (Part 7) 6Cr17Ni12Mo2H.
Can IS 1570 (Part 7) 6Cr17Ni12Mo2H be substituted with BS 970 (Part 1) 320S31?
IS 1570 (Part 7) 6Cr17Ni12Mo2H and BS 970 (Part 1) 320S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 320S31 is often considered as a substitute for IS 1570 (Part 7) 6Cr17Ni12Mo2H in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.