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BS 970 EN56BM vs IS 1570 (Part 7) 12Cr12MoH

Related Material — 65.2% match based on chemical composition and mechanical property overlap.

BS 970 EN56BM (BS 970:1955) and IS 1570 (Part 7) 12Cr12MoH (IS 1570 (Part 7):1992) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN56BM is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 7) 12Cr12MoH is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN56BM vs IS 1570 (Part 7) 12Cr12MoH is a 72.9% match. As per mechanical properties, the match is 50%. Combined, this makes them a related material overall at 65.2%.

Frequently Compared With BS 970 EN56BM:
GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12Ni2Mo EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4845 ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
72.9%
MECHANICAL MATCH
50%
OVERALL
65.2%
Specifications
Property BS 970 EN56BM IS 1570 (Part 7) 12Cr12MoH
Standard BS 970:1955 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
C (%) 0.12-0.18 0.08-0.16
Si (%) <=1.00 <=0.60
Mn (%) <=1.50 0.40-1.00
Ni (%) <=1.00 <=1.0
Cr (%) 12.0-14.0 11.5-13.00
Mo (%) <=0.60 0.40-0.80
S (%) <=0.75 <=0.035
Se (%) <=0.60 Not specified
Zr (%) <=0.60 Not specified
Pb (%) <=0.35 Not specified
P (%) <=0.045 <=0.040
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 EN56BM IS 1570 (Part 7) 12Cr12MoH
Tensile Strength ≥541 MPa (35 tons/sq in, converted) 680-880 MPa
Elongation ≥20% >=20%
Hardness 152-207 HB Not specified
Condition Hardened and tempered P, ruling section 6 in (lowest-strength condition of the standard) Bars, forgings, Q+T, thickness up to 75 (first row of Table 3)
Yield Strength Not specified >=490 MPa (0.2 % proof stress)
Typical Applications
BS 970 EN56BM
Not documented
IS 1570 (Part 7) 12Cr12MoH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
Can BS 970 EN56BM Be Substituted With IS 1570 (Part 7) 12Cr12MoH?
BS 970 EN56BM and IS 1570 (Part 7) 12Cr12MoH 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 EN56BM
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IS 1570 (Part 7) 12Cr12MoH
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Frequently Asked Questions
What is the difference between BS 970 EN56BM and IS 1570 (Part 7) 12Cr12MoH?
BS 970 EN56BM specifies Se, Zr, Pb which are not specified for IS 1570 (Part 7) 12Cr12MoH.
Can BS 970 EN56BM be substituted with IS 1570 (Part 7) 12Cr12MoH?
BS 970 EN56BM and IS 1570 (Part 7) 12Cr12MoH 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.