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BS 970 (Part 3) 303S31 vs IS 1570 (Part 7) 12Cr12MoVH

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

BS 970 (Part 3) 303S31 (BS 970 (Part 3):1991) and IS 1570 (Part 7) 12Cr12MoVH (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 3) 303S31 is typically 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), while IS 1570 (Part 7) 12Cr12MoVH 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 3) 303S31 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 12Cr12MoVH is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 3) 303S31 vs IS 1570 (Part 7) 12Cr12MoVH is a 53.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 (Part 3) 303S31:
GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH
Match Breakdown
CHEMISTRY MATCH
53.4%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 (Part 3) 303S31 IS 1570 (Part 7) 12Cr12MoVH
Standard BS 970 (Part 3):1991 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
C (%) <=0.12 0.08-0.16
Si (%) <=1.0 <=0.60
Mn (%) <=2.0 0.40-1.00
P (%) <=0.060 <=0.040
S (%) 0.15-0.35 <=0.035
Cr (%) 17.0-19.0 11.5-13.00
Ni (%) 8.0-10.0 <=1.0
Mo (%) Not specified 0.40-0.80
V (%) Not specified 0.10-0.30
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 3) 303S31 IS 1570 (Part 7) 12Cr12MoVH
Tensile Strength Not specified 770-930 MPa
Yield Strength Not specified >=585 MPa (0.2 % proof stress)
Elongation Not specified >=15%
Condition Not specified Bars, forgings, Q+T, thickness up to 150 (first row of Table 3)
Typical Applications
BS 970 (Part 3) 303S31
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 1570 (Part 7) 12Cr12MoVH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can BS 970 (Part 3) 303S31 Be Substituted With IS 1570 (Part 7) 12Cr12MoVH?
BS 970 (Part 3) 303S31 and IS 1570 (Part 7) 12Cr12MoVH 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 3) 303S31
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IS 1570 (Part 7) 12Cr12MoVH
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 303S31 and IS 1570 (Part 7) 12Cr12MoVH?
IS 1570 (Part 7) 12Cr12MoVH specifies Mo, V which are not specified for BS 970 (Part 3) 303S31.
Can BS 970 (Part 3) 303S31 be substituted with IS 1570 (Part 7) 12Cr12MoVH?
BS 970 (Part 3) 303S31 and IS 1570 (Part 7) 12Cr12MoVH 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.