Minimal Match — 53.1% match
based on chemical composition and mechanical property overlap.
IS 4367 20C15 (IS 4367:1991) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Carbon Steel category.
IS 4367 20C15 is typically used for low-carbon case-hardening (carburizing) steel; used for lightly stressed components such as pins, bushes, and small shafts requiring a hard wear-resistant surface with a tough core, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two).
IS 4367 20C15 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 4367 20C15 vs BS 970 (Part 1) 055M15 is a 79.7% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 53.1%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 4367 20C15
BS 970 (Part 1) 055M15
Tensile Strength
600-750 MPa
310 MPa min
Yield Strength
400 MPa min
Not specified
Elongation
>=18%
25 % min
Izod Impact
50 J min
Not specified
Hardness
178-221 HB
121 HB min
Hardness (soft annealed)
<=200 HB
Not specified
Condition
Hardened and tempered, ruling section up to 63 mm
As-rolled
Typical Applications
IS 4367 20C15
Low-carbon case-hardening (carburizing) steel; used for lightly stressed components such as pins, bushes, and small shafts requiring a hard wear-resistant surface with a tough core
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
IS 4367 20C15 specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can IS 4367 20C15 Be Substituted With BS 970 (Part 1) 055M15?
IS 4367 20C15 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.
What is the difference between IS 4367 20C15 and BS 970 (Part 1) 055M15?
IS 4367 20C15 specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can IS 4367 20C15 be substituted with BS 970 (Part 1) 055M15?
IS 4367 20C15 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.