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IS 1570 (Part 7) 12C7H vs BS 970 (Part 1) 055M15

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

IS 1570 (Part 7) 12C7H (IS 1570 (Part 7):1992) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 1570 (Part 7) 12C7H is typically used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). IS 1570 (Part 7) 12C7H is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 055M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 7) 12C7H vs BS 970 (Part 1) 055M15 is a 72.4% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 1570 (Part 7) 12C7H:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 080A20 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10
Match Breakdown
CHEMISTRY MATCH
72.4%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property IS 1570 (Part 7) 12C7H BS 970 (Part 1) 055M15
Standard IS 1570 (Part 7):1992 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) <=0.17 <=0.20
Si (%) 0.10-0.35 Not specified
Mn (%) 0.40-1.00 <=0.80
P (%) <=0.045 Not specified
S (%) <=0.045 Not specified
Cr (%) <=0.25 Not specified
Ni (%) <=0.35 Not specified
Cu (%) <=0.30 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 7) 12C7H BS 970 (Part 1) 055M15
Tensile Strength 360-480 MPa 310 MPa min
Yield Strength >=215 MPa (0.2 % proof stress) Not specified
Elongation >=24% 25 % min
Condition Seamless pipe and pipe with seam, N, thickness - (first row of Table 3) As-rolled
Hardness Not specified 121 HB min
Typical Applications
IS 1570 (Part 7) 12C7H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can IS 1570 (Part 7) 12C7H Be Substituted With BS 970 (Part 1) 055M15?
IS 1570 (Part 7) 12C7H and BS 970 (Part 1) 055M15 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
IS 1570 (Part 7) 12C7H
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BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between IS 1570 (Part 7) 12C7H and BS 970 (Part 1) 055M15?
IS 1570 (Part 7) 12C7H specifies Si, P, S, Cr which are not specified for BS 970 (Part 1) 055M15.
Can IS 1570 (Part 7) 12C7H be substituted with BS 970 (Part 1) 055M15?
IS 1570 (Part 7) 12C7H and BS 970 (Part 1) 055M15 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.