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BS 970 EN56CM vs IS 1570 (Part 7) 12Cr12MoH

Related Material — 63% match based on chemical composition and mechanical property overlap.

BS 970 EN56CM (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 EN56CM 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 EN56CM vs IS 1570 (Part 7) 12Cr12MoH is a 69.5% match. As per mechanical properties, the match is 50%. Combined, this makes them a related material overall at 63%.

Frequently Compared With BS 970 EN56CM:
GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H EN 10088-1 1.4301 ASTM A959 .- IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
69.5%
MECHANICAL MATCH
50%
OVERALL
63%
Specifications
Property BS 970 EN56CM IS 1570 (Part 7) 12Cr12MoH
Standard BS 970:1955 IS 1570 (Part 7):1992
Category Stainless Steel Stainless Steel
C (%) 0.18-0.25 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 EN56CM 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 EN56CM
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 EN56CM Be Substituted With IS 1570 (Part 7) 12Cr12MoH?
BS 970 EN56CM 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.
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BS 970 EN56CM
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IS 1570 (Part 7) 12Cr12MoH
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Frequently Asked Questions
What is the difference between BS 970 EN56CM and IS 1570 (Part 7) 12Cr12MoH?
BS 970 EN56CM specifies Se, Zr, Pb which are not specified for IS 1570 (Part 7) 12Cr12MoH.
Can BS 970 EN56CM be substituted with IS 1570 (Part 7) 12Cr12MoH?
BS 970 EN56CM 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.