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IS 1570 C20 vs BS 970 (Part 1) 070M20

Strong Match — 90% match based on chemical composition and mechanical property overlap.

IS 1570 C20 (IS 1570:1961) and BS 970 (Part 1) 070M20 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Carbon Steel category. IS 1570 C20 is typically used for shafts, studs, pins, forged components, machinery parts, carburized parts, while BS 970 (Part 1) 070M20 is commonly used for wrought steel supplied as bright bar for mechanical and allied engineering purposes (table 4).. IS 1570 C20 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 070M20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 C20 vs BS 970 (Part 1) 070M20 is a 90% 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 90%.

Frequently Compared With IS 1570 C20:
BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 3) 070M20 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A12
Match Breakdown
CHEMISTRY MATCH
90%
MECHANICAL MATCH
No shared data
OVERALL
90%
Specifications
Property IS 1570 C20 BS 970 (Part 1) 070M20
Standard IS 1570:1961 BS 970 (Part 1):1983
Category Carbon Steel Carbon Steel
C (%) 0.15-0.25 0.16-0.24
Mn (%) 0.60-0.90 0.50-0.90
Si (%) 0.15-0.35 Not specified
S (%) <=0.04 <=0.050
P (%) <=0.04 <=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 C20 BS 970 (Part 1) 070M20
Tensile Strength 440-520 MPa Not specified
Yield Strength >=242 MPa Not specified
Elongation >=24% Not specified
Hardness 121-156 HB Not specified
Typical Applications
IS 1570 C20
shafts, studs, pins, forged components, machinery parts, carburized parts
BS 970 (Part 1) 070M20
Wrought steel supplied as bright bar for mechanical and allied engineering purposes (Table 4).
Key Differences
Can IS 1570 C20 Be Substituted With BS 970 (Part 1) 070M20?
IS 1570 C20 and BS 970 (Part 1) 070M20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 070M20 is often considered as a substitute for IS 1570 C20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
IS 1570 C20
Round Bar → (5 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4900–6900 mm (192.91–271.65 in)
BS 970 (Part 1) 070M20
No active listings currently.
On M-EX Right Now
IS 1570 C20
5 active listings and RFQs →
BS 970 (Part 1) 070M20
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 C20 and BS 970 (Part 1) 070M20?
IS 1570 C20 specifies Si which is not specified for BS 970 (Part 1) 070M20.
Can IS 1570 C20 be substituted with BS 970 (Part 1) 070M20?
IS 1570 C20 and BS 970 (Part 1) 070M20 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 070M20 is often considered as a substitute for IS 1570 C20 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.