IS 1570 (Part 2/Sec 1) 40C8 vs BS 970 (Part 1) 055M15
Related Material — 58% match
based on chemical composition and mechanical property overlap.
IS 1570 (Part 2/Sec 1) 40C8 (IS 1570 (Part 2/Sec 1):1979) 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 2/Sec 1) 40C8 is typically used for hardened and tempered parts, cold rolled medium and high carbon strip and hot rolled bars for bright bars and machined parts (the standard links this grade to is 5517, is 7226, is 7283), while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two).
IS 1570 (Part 2/Sec 1) 40C8 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 2/Sec 1) 40C8 vs BS 970 (Part 1) 055M15 is a 87% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a related material overall at 58%.
Frequently Compared With IS 1570 (Part 2/Sec 1) 40C8:
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 2/Sec 1) 40C8
BS 970 (Part 1) 055M15
Tensile Strength
580-680 MPa
310 MPa min
Elongation
>=18%
25 % min
Condition
Not specified
As-rolled
Hardness
Not specified
121 HB min
Typical Applications
IS 1570 (Part 2/Sec 1) 40C8
Hardened and tempered parts, cold rolled medium and high carbon strip and hot rolled bars for bright bars and machined parts (the standard links this grade to IS 5517, IS 7226, IS 7283)
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Can IS 1570 (Part 2/Sec 1) 40C8 Be Substituted With BS 970 (Part 1) 055M15?
IS 1570 (Part 2/Sec 1) 40C8 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 1570 (Part 2/Sec 1) 40C8 and BS 970 (Part 1) 055M15?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 1570 (Part 2/Sec 1) 40C8 be substituted with BS 970 (Part 1) 055M15?
IS 1570 (Part 2/Sec 1) 40C8 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.