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IS 11169 (Part 1) 27C15 vs BS 970 (Part 1) 055M15

Minimal Match — 53.3% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 27C15 (IS 11169 (Part 1):1984) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 11169 (Part 1) 27C15 is typically used for manganese case-hardening steel; used for gears, shafts, and machine components requiring case hardening where higher core strength than plain carbon grades is needed, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). IS 11169 (Part 1) 27C15 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 11169 (Part 1) 27C15 vs BS 970 (Part 1) 055M15 is a 80% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 53.3%.

Frequently Compared With IS 11169 (Part 1) 27C15:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 080A20 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
80%
MECHANICAL MATCH
0%
OVERALL
53.3%
Specifications
Property IS 11169 (Part 1) 27C15 BS 970 (Part 1) 055M15
Standard IS 11169 (Part 1):1984 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.22-0.32 <=0.20
Mn (%) 1.30-1.70 <=0.80
Si (%) 0.10-0.35 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 11169 (Part 1) 27C15 BS 970 (Part 1) 055M15
Hardness, annealed <=190 HB Not specified
Condition Not specified As-rolled
Tensile Strength Not specified 310 MPa min
Elongation Not specified 25 % min
Hardness Not specified 121 HB min
Typical Applications
IS 11169 (Part 1) 27C15
Manganese case-hardening steel; used for gears, shafts, and machine components requiring case hardening where higher core strength than plain carbon grades is needed
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can IS 11169 (Part 1) 27C15 Be Substituted With BS 970 (Part 1) 055M15?
IS 11169 (Part 1) 27C15 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.
Forms & Sizes Available on M-EX
IS 11169 (Part 1) 27C15
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5600–5700 mm (220.47–224.41 in)
BS 970 (Part 1) 055M15
No active listings currently.
On M-EX Right Now
IS 11169 (Part 1) 27C15
2 active listings and RFQs →
BS 970 (Part 1) 055M15
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 27C15 and BS 970 (Part 1) 055M15?
IS 11169 (Part 1) 27C15 specifies Si which is not specified for BS 970 (Part 1) 055M15.
Can IS 11169 (Part 1) 27C15 be substituted with BS 970 (Part 1) 055M15?
IS 11169 (Part 1) 27C15 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.