IS 1570 C30 vs BS 970 (Part 1) 055M15

Minimal Match — 53.4% match based on chemical composition and mechanical property overlap.

IS 1570 C30 (IS 1570:1961) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 1570 C30 is typically used for axles, shafts, gears, connecting rods, machine parts, forgings, while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). IS 1570 C30 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 C30 vs BS 970 (Part 1) 055M15 is a 80.1% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 53.4%.

Frequently Compared With IS 1570 C30:
BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
80.1%
MECHANICAL MATCH
0%
OVERALL
53.4%
Specifications
Property IS 1570 C30 BS 970 (Part 1) 055M15
Standard IS 1570:1961 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.25-0.35 <=0.20
Mn (%) 0.60-0.90 <=0.80
Si (%) 0.15-0.35 Not specified
S (%) <=0.04 Not specified
P (%) <=0.04 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 IS 1570 C30 BS 970 (Part 1) 055M15
Tensile Strength 500-600 MPa 310 MPa min
Yield Strength >=275 MPa Not specified
Elongation >=21% 25 % min
Hardness 143-187 HB 121 HB min
Condition Not specified As-rolled
Typical Applications
IS 1570 C30
axles, shafts, gears, connecting rods, machine parts, forgings
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can IS 1570 C30 Be Substituted With BS 970 (Part 1) 055M15?
IS 1570 C30 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.
Forms & Sizes Available on M-EX
IS 1570 C30
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5300–6200 mm (208.66–244.09 in)
BS 970 (Part 1) 055M15
No active listings currently.
On M-EX Right Now
IS 1570 C30
2 active listings and RFQs →
BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between IS 1570 C30 and BS 970 (Part 1) 055M15?
IS 1570 C30 specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can IS 1570 C30 be substituted with BS 970 (Part 1) 055M15?
IS 1570 C30 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.