Post Stock Login Register

IS 1570 (Part 2/Sec 1) 15C4 vs BS 970 (Part 1) 055M15

Close Alternative — 81% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 2/Sec 1) 15C4 (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) 15C4 is typically used for wire for wood screws (the standard links this grade to is 1812), 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) 15C4 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) 15C4 vs BS 970 (Part 1) 055M15 is a 96.4% match. As per mechanical properties, the match is 50%. Combined, this makes them a close alternative overall at 81%.

Frequently Compared With IS 1570 (Part 2/Sec 1) 15C4:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 080A20 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
96.4%
MECHANICAL MATCH
50%
OVERALL
81%
Specifications
Property IS 1570 (Part 2/Sec 1) 15C4 BS 970 (Part 1) 055M15
Standard IS 1570 (Part 2/Sec 1):1979 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) <=0.20 <=0.20
Mn (%) 0.30-0.60 <=0.80
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) 15C4 BS 970 (Part 1) 055M15
Tensile Strength 370-490 MPa 310 MPa min
Elongation >=25% 25 % min
Condition Not specified As-rolled
Hardness Not specified 121 HB min
Typical Applications
IS 1570 (Part 2/Sec 1) 15C4
Wire for wood screws (the standard links this grade to IS 1812)
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Can IS 1570 (Part 2/Sec 1) 15C4 Be Substituted With BS 970 (Part 1) 055M15?
IS 1570 (Part 2/Sec 1) 15C4 and BS 970 (Part 1) 055M15 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
On M-EX Right Now
IS 1570 (Part 2/Sec 1) 15C4
0 active listings and RFQs →
BS 970 (Part 1) 055M15
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 2/Sec 1) 15C4 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) 15C4 be substituted with BS 970 (Part 1) 055M15?
IS 1570 (Part 2/Sec 1) 15C4 and BS 970 (Part 1) 055M15 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.