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BS 970 EN56A vs IS 1570 (Part 7) 11Cr17Ni13W3TiH

Minimal Match — 55% match based on chemical composition and mechanical property overlap.

BS 970 EN56A (BS 970:1955) and IS 1570 (Part 7) 11Cr17Ni13W3TiH (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN56A 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 EN56A vs IS 1570 (Part 7) 11Cr17Ni13W3TiH is a 65.8% match. As per mechanical properties, the match is 33.3%. Combined, this makes them a minimal match overall at 55%.

Frequently Compared With BS 970 EN56A:
ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
65.8%
MECHANICAL MATCH
33.3%
OVERALL
55%
Specifications
Property BS 970 EN56A IS 1570 (Part 7) 11Cr17Ni13W3TiH
Standard BS 970:1955 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
C (%) <=0.12 0.07-0.15
Si (%) <=1.00 <=1.00
Mn (%) <=1.00 <=1.00
Ni (%) <=1.00 12.00-14.50
Cr (%) 12.0-14.0 15.5-17.50
S (%) <=0.045 <=0.030
P (%) <=0.045 <=0.045
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 EN56A IS 1570 (Part 7) 11Cr17Ni13W3TiH
Tensile Strength ≥541 MPa (35 tons/sq in, converted) 600-800 MPa
Yield Strength ≥386 MPa (25 tons/sq in, converted) >=390 MPa (0.2 % proof stress)
Elongation ≥25% >=25%
Hardness 152-207 HB Not specified
Condition Hardened and tempered P (ruling 6), ruling section 6 in (lowest-strength condition of the standard) Bars, forgings, pipes, hot cold worked, thickness up to 60 (first row of Table 3)
Typical Applications
BS 970 EN56A
Not documented
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 EN56A Be Substituted With IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 EN56A 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.
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BS 970 EN56A
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IS 1570 (Part 7) 11Cr17Ni13W3TiH
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Frequently Asked Questions
What is the difference between BS 970 EN56A and IS 1570 (Part 7) 11Cr17Ni13W3TiH?
IS 1570 (Part 7) 11Cr17Ni13W3TiH specifies W, Ti, B which are not specified for BS 970 EN56A.
Can BS 970 EN56A be substituted with IS 1570 (Part 7) 11Cr17Ni13W3TiH?
BS 970 EN56A 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.