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IS 1570 (Part 2/Sec 1) 20C8 vs SAE J403 1021

Strong Match — 94.6% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 2/Sec 1) 20C8 (IS 1570 (Part 2/Sec 1):1979) and SAE J403 1021 (SAE J403:2001) are both steel grades. Both fall under the Carbon Steel category. IS 1570 (Part 2/Sec 1) 20C8 is typically used for billets and bars for forgings and carbon steel forgings (the standard links this grade to is 1875, is 2004), while SAE J403 1021 is commonly used for chemistry-only grade; product scope as listed in the composition notes. IS 1570 (Part 2/Sec 1) 20C8 is defined under Bureau of Indian Standards (IS), originating from India, while SAE J403 1021 is defined under SAE International, originating from United States.

As per chemical composition, IS 1570 (Part 2/Sec 1) 20C8 vs SAE J403 1021 is a 94.6% 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 94.6%.

Frequently Compared With IS 1570 (Part 2/Sec 1) 20C8:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 070M20 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
94.6%
MECHANICAL MATCH
No shared data
OVERALL
94.6%
Specifications
Property IS 1570 (Part 2/Sec 1) 20C8 SAE J403 1021
Standard IS 1570 (Part 2/Sec 1):1979 SAE J403:2001
Category Carbon Steel Carbon Steel
C (%) 0.15-0.25 0.18-0.23
Mn (%) 0.60-0.90 0.60-0.90
P (%) Not specified <=0.030
S (%) Not specified <=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 (Part 2/Sec 1) 20C8 SAE J403 1021
Tensile Strength 440-520 MPa Not specified
Elongation >=24% Not specified
Typical Applications
IS 1570 (Part 2/Sec 1) 20C8
Billets and bars for forgings and carbon steel forgings (the standard links this grade to IS 1875, IS 2004)
SAE J403 1021
Chemistry-only grade; product scope as listed in the composition notes
Key Differences
Can IS 1570 (Part 2/Sec 1) 20C8 Be Substituted With SAE J403 1021?
IS 1570 (Part 2/Sec 1) 20C8 and SAE J403 1021 overlap closely enough on chemistry and mechanical properties that SAE J403 1021 is often considered as a substitute for IS 1570 (Part 2/Sec 1) 20C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
IS 1570 (Part 2/Sec 1) 20C8
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SAE J403 1021
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Frequently Asked Questions
What is the difference between IS 1570 (Part 2/Sec 1) 20C8 and SAE J403 1021?
SAE J403 1021 specifies P, S which are not specified for IS 1570 (Part 2/Sec 1) 20C8.
Can IS 1570 (Part 2/Sec 1) 20C8 be substituted with SAE J403 1021?
IS 1570 (Part 2/Sec 1) 20C8 and SAE J403 1021 overlap closely enough on chemistry and mechanical properties that SAE J403 1021 is often considered as a substitute for IS 1570 (Part 2/Sec 1) 20C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.