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IS 1570 (Part 4) 27C15 vs BS 970 (Part 1) 120M28

Strong Match — 87.7% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 27C15 (IS 1570 (Part 4):1988) and BS 970 (Part 1) 120M28 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Carbon Steel category. IS 1570 (Part 4) 27C15 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 120M28 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 4) 27C15 vs BS 970 (Part 1) 120M28 is a 87.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 87.7%.

Frequently Compared With IS 1570 (Part 4) 27C15:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
87.7%
MECHANICAL MATCH
No shared data
OVERALL
87.7%
Specifications
Property IS 1570 (Part 4) 27C15 BS 970 (Part 1) 120M28
Standard IS 1570 (Part 4):1988 BS 970 (Part 1):1983
Category Carbon Steel Carbon Steel
C (%) 0.22-0.32 0.24-0.32
Si (%) 0.10-0.35 Not specified
Mn (%) 1.30-1.70 1.00-1.40
P (%) Not specified <=0.050
S (%) Not specified <=0.050
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 4) 27C15 BS 970 (Part 1) 120M28
Tensile Strength 690-840 MPa Not specified
Yield Strength >=450 MPa (0.2 % proof stress) Not specified
Elongation >=16% Not specified
Izod Impact >=48 J Not specified
Hardness 201-248 HBS (guidance only) Not specified
Condition Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 63 mm Not specified
Typical Applications
IS 1570 (Part 4) 27C15
Not documented
BS 970 (Part 1) 120M28
Wrought steel for mechanical and allied engineering purposes; supplied in the normalized condition (Table 2).
Key Differences
Can IS 1570 (Part 4) 27C15 Be Substituted With BS 970 (Part 1) 120M28?
IS 1570 (Part 4) 27C15 and BS 970 (Part 1) 120M28 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 120M28 is often considered as a substitute for IS 1570 (Part 4) 27C15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
IS 1570 (Part 4) 27C15
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BS 970 (Part 1) 120M28
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 27C15 and BS 970 (Part 1) 120M28?
IS 1570 (Part 4) 27C15 specifies Si which is not specified for BS 970 (Part 1) 120M28. BS 970 (Part 1) 120M28 specifies P, S which are not specified for IS 1570 (Part 4) 27C15.
Can IS 1570 (Part 4) 27C15 be substituted with BS 970 (Part 1) 120M28?
IS 1570 (Part 4) 27C15 and BS 970 (Part 1) 120M28 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 120M28 is often considered as a substitute for IS 1570 (Part 4) 27C15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.