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IS 1570 (Part 2/Sec 1) 40C8 vs SAE J403 1040

Strong Match — 96.3% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 2/Sec 1) 40C8 (IS 1570 (Part 2/Sec 1):1979) and SAE J403 1040 (SAE J403:2001) 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 SAE J403 1040 is commonly used for chemistry-only grade; product scope as listed in the composition notes. IS 1570 (Part 2/Sec 1) 40C8 is defined under Bureau of Indian Standards (IS), originating from India, while SAE J403 1040 is defined under SAE International, originating from United States.

As per chemical composition, IS 1570 (Part 2/Sec 1) 40C8 vs SAE J403 1040 is a 96.3% 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 96.3%.

Frequently Compared With IS 1570 (Part 2/Sec 1) 40C8:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 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) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32
Match Breakdown
CHEMISTRY MATCH
96.3%
MECHANICAL MATCH
No shared data
OVERALL
96.3%
Specifications
Property IS 1570 (Part 2/Sec 1) 40C8 SAE J403 1040
Standard IS 1570 (Part 2/Sec 1):1979 SAE J403:2001
Category Carbon Steel Carbon Steel
C (%) 0.35-0.45 0.37-0.44
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) 40C8 SAE J403 1040
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)
SAE J403 1040
Chemistry-only grade; product scope as listed in the composition notes
Key Differences
Can IS 1570 (Part 2/Sec 1) 40C8 Be Substituted With SAE J403 1040?
IS 1570 (Part 2/Sec 1) 40C8 and SAE J403 1040 overlap closely enough on chemistry and mechanical properties that SAE J403 1040 is often considered as a substitute for IS 1570 (Part 2/Sec 1) 40C8 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) 40C8
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SAE J403 1040
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Frequently Asked Questions
What is the difference between IS 1570 (Part 2/Sec 1) 40C8 and SAE J403 1040?
SAE J403 1040 specifies 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 SAE J403 1040?
IS 1570 (Part 2/Sec 1) 40C8 and SAE J403 1040 overlap closely enough on chemistry and mechanical properties that SAE J403 1040 is often considered as a substitute for IS 1570 (Part 2/Sec 1) 40C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.