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BS 970 (Part 1) 316S31 vs IS 1570 (Part 7) 11Cr17Ni13W3TiH

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 316S31 (BS 970 (Part 1):1991) and IS 1570 (Part 7) 11Cr17Ni13W3TiH (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 316S31 is typically used for austenitic stainless and heat resisting steel (section five), while IS 1570 (Part 7) 11Cr17Ni13W3TiH is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature. BS 970 (Part 1) 316S31 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 11Cr17Ni13W3TiH is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 316S31 vs IS 1570 (Part 7) 11Cr17Ni13W3TiH is a 58.7% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 (Part 1) 316S31:
GOST 5632 08X18H10 ASTM A959 .- GOST 5632 06Kh23N28 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH
Match Breakdown
CHEMISTRY MATCH
58.7%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property BS 970 (Part 1) 316S31 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Standard BS 970 (Part 1):1991 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
C (%) <=0.07 0.07-0.15
Si (%) <=1.0 <=1.00
Mn (%) <=2.0 <=1.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Cr (%) 16.5-18.5 15.5-17.50
Mo (%) 2.00-2.50 Not specified
Ni (%) 10.5-13.5 12.00-14.50
W (%) Not specified 2.5-3.5
Ti (%) Not specified >=4xC, <=0.80
B (%) Not specified <=0.0006
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) 316S31 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Condition Softened, 1000-1100 deg C Bars, forgings, pipes, hot cold worked, thickness up to 60 (first row of Table 3)
Tensile Strength 510 MPa min 600-800 MPa
Yield Strength 205 MPa min (0.2% proof) >=390 MPa (0.2 % proof stress)
Elongation 40 % min >=25%
Hardness 183 HB max Not specified
Typical Applications
BS 970 (Part 1) 316S31
Austenitic stainless and heat resisting steel (section five)
IS 1570 (Part 7) 11Cr17Ni13W3TiH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can BS 970 (Part 1) 316S31 Be Substituted With IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 (Part 1) 316S31 and IS 1570 (Part 7) 11Cr17Ni13W3TiH 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.
On M-EX Right Now
BS 970 (Part 1) 316S31
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IS 1570 (Part 7) 11Cr17Ni13W3TiH
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 316S31 and IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 (Part 1) 316S31 specifies Mo which is not specified for IS 1570 (Part 7) 11Cr17Ni13W3TiH. IS 1570 (Part 7) 11Cr17Ni13W3TiH specifies W, Ti, B which are not specified for BS 970 (Part 1) 316S31.
Can BS 970 (Part 1) 316S31 be substituted with IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 (Part 1) 316S31 and IS 1570 (Part 7) 11Cr17Ni13W3TiH 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.