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BS 970 (Part 3) 150M19 vs IS 1570 (Part 4) 20C15

Strong Match — 97.1% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 150M19 (BS 970 (Part 3):1991) and IS 1570 (Part 4) 20C15 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 3) 150M19 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 20C15 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 3) 150M19 vs IS 1570 (Part 4) 20C15 is a 97.1% 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 97.1%.

Frequently Compared With BS 970 (Part 3) 150M19:
BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 3) 070M20 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A62 BS 970 (Part 1) 060A72 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10
Match Breakdown
CHEMISTRY MATCH
97.1%
MECHANICAL MATCH
No shared data
OVERALL
97.1%
Specifications
Property BS 970 (Part 3) 150M19 IS 1570 (Part 4) 20C15
Standard BS 970 (Part 3):1991 IS 1570 (Part 4):1988
Category Carbon Steel Carbon Steel
C (%) 0.15-0.23 0.16-0.24
Si (%) 0.10-0.40 0.10-0.35
Mn (%) 1.30-1.70 1.30-1.70
P (%) <=0.05 Not specified
S (%) <=0.05 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 BS 970 (Part 3) 150M19 IS 1570 (Part 4) 20C15
Tensile Strength Not specified 690-840 MPa
Yield Strength Not specified >=450 MPa (0.2 % proof stress)
Elongation Not specified >=16%
Izod Impact Not specified >=48 J
Hardness Not specified 201-248 HBS (guidance only)
Condition Not specified Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 30 mm
Typical Applications
BS 970 (Part 3) 150M19
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; carbon and carbon manganese steel (Table 13)
IS 1570 (Part 4) 20C15
Not documented
Key Differences
Can BS 970 (Part 3) 150M19 Be Substituted With IS 1570 (Part 4) 20C15?
BS 970 (Part 3) 150M19 and IS 1570 (Part 4) 20C15 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 20C15 is often considered as a substitute for BS 970 (Part 3) 150M19 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 (Part 3) 150M19
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IS 1570 (Part 4) 20C15
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 150M19 and IS 1570 (Part 4) 20C15?
BS 970 (Part 3) 150M19 specifies P, S which are not specified for IS 1570 (Part 4) 20C15.
Can BS 970 (Part 3) 150M19 be substituted with IS 1570 (Part 4) 20C15?
BS 970 (Part 3) 150M19 and IS 1570 (Part 4) 20C15 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 20C15 is often considered as a substitute for BS 970 (Part 3) 150M19 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.