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IS 1570 (Part 2/Sec 1) 40C8 vs BS 970 (Part 3) 070M55

Close Alternative — 84.3% 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 3) 070M55 (BS 970 (Part 3):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 3) 070M55 is commonly used for used for springs, blades, wear plates, hand tools, shafts, and cutting components.. IS 1570 (Part 2/Sec 1) 40C8 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 070M55 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 3) 070M55 is a 84.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 84.3%.

Frequently Compared With IS 1570 (Part 2/Sec 1) 40C8:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A04 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 045A10 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
84.3%
MECHANICAL MATCH
No shared data
OVERALL
84.3%
Specifications
Property IS 1570 (Part 2/Sec 1) 40C8 BS 970 (Part 3) 070M55
Standard IS 1570 (Part 2/Sec 1):1979 BS 970 (Part 3):1991
Category Carbon Steel Carbon Steel
C (%) 0.35-0.45 0.50-0.60
Mn (%) 0.60-0.90 0.50-0.90
Si (%) Not specified 0.10-0.40
P (%) Not specified <=0.05
S (%) Not specified <=0.05
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 3) 070M55
Tensile Strength 580-680 MPa Not specified
Elongation >=18% Not specified
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 3) 070M55
Used for springs, blades, wear plates, hand tools, shafts, and cutting components.
Key Differences
Can IS 1570 (Part 2/Sec 1) 40C8 Be Substituted With BS 970 (Part 3) 070M55?
IS 1570 (Part 2/Sec 1) 40C8 and BS 970 (Part 3) 070M55 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.
Forms & Sizes Available on M-EX
IS 1570 (Part 2/Sec 1) 40C8
No active listings currently.
BS 970 (Part 3) 070M55
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4800–5800 mm (188.98–228.35 in)
On M-EX Right Now
IS 1570 (Part 2/Sec 1) 40C8
0 active listings and RFQs →
BS 970 (Part 3) 070M55
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 2/Sec 1) 40C8 and BS 970 (Part 3) 070M55?
BS 970 (Part 3) 070M55 specifies Si, P, S which are not specified for IS 1570 (Part 2/Sec 1) 40C8.
Can IS 1570 (Part 2/Sec 1) 40C8 be substituted with BS 970 (Part 3) 070M55?
IS 1570 (Part 2/Sec 1) 40C8 and BS 970 (Part 3) 070M55 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.