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IS 1570 (Part 2/Sec 1) 45C8 vs SAE J403 1042

Strong Match — 97.4% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 2/Sec 1) 45C8 (IS 1570 (Part 2/Sec 1):1979) and SAE J403 1042 (SAE J403:2014) are both steel grades. Both fall under the Carbon Steel category. IS 1570 (Part 2/Sec 1) 45C8 is typically used for billets and bars for forgings, carbon steel forgings, cold rolled strip for springs, flame and induction hardened parts, shipbuilding forgings and hardened and tempered parts (the standard links this grade to is 1875, is 2004, is 2507, is 3930, is 3261, is 5517), while SAE J403 1042 is commonly used for chemistry-only grade; product scope as listed in the composition notes. IS 1570 (Part 2/Sec 1) 45C8 is defined under Bureau of Indian Standards (IS), originating from India, while SAE J403 1042 is defined under SAE International, originating from United States.

As per chemical composition, IS 1570 (Part 2/Sec 1) 45C8 vs SAE J403 1042 is a 97.4% 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 97.4%.

Frequently Compared With IS 1570 (Part 2/Sec 1) 45C8:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
97.4%
MECHANICAL MATCH
No shared data
OVERALL
97.4%
Specifications
Property IS 1570 (Part 2/Sec 1) 45C8 SAE J403 1042
Standard IS 1570 (Part 2/Sec 1):1979 SAE J403:2014
Category Carbon Steel Carbon Steel
C (%) 0.40-0.50 0.40-0.47
Mn (%) 0.60-0.90 0.60-0.90
P (%) Not specified <=0.030 (flat rolled), <=0.040 (long products)
S (%) Not specified <=0.035 (flat rolled), <=0.050 (long products)
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) 45C8 SAE J403 1042
Tensile Strength 630-710 MPa Not specified
Elongation >=15% Not specified
Typical Applications
IS 1570 (Part 2/Sec 1) 45C8
Billets and bars for forgings, carbon steel forgings, cold rolled strip for springs, flame and induction hardened parts, shipbuilding forgings and hardened and tempered parts (the standard links this grade to IS 1875, IS 2004, IS 2507, IS 3930, IS 3261, IS 5517)
SAE J403 1042
Chemistry-only grade; product scope as listed in the composition notes
Key Differences
Can IS 1570 (Part 2/Sec 1) 45C8 Be Substituted With SAE J403 1042?
IS 1570 (Part 2/Sec 1) 45C8 and SAE J403 1042 overlap closely enough on chemistry and mechanical properties that SAE J403 1042 is often considered as a substitute for IS 1570 (Part 2/Sec 1) 45C8 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 (Part 2/Sec 1) 45C8
No active listings currently.
SAE J403 1042
Round Bar → (6 listings)
Diameter: 7–9.525 mm (0.28–0.38 in)
Length: 3500–7000 mm (137.8–275.59 in)
On M-EX Right Now
IS 1570 (Part 2/Sec 1) 45C8
0 active listings and RFQs →
SAE J403 1042
6 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 2/Sec 1) 45C8 and SAE J403 1042?
SAE J403 1042 specifies P, S which are not specified for IS 1570 (Part 2/Sec 1) 45C8.
Can IS 1570 (Part 2/Sec 1) 45C8 be substituted with SAE J403 1042?
IS 1570 (Part 2/Sec 1) 45C8 and SAE J403 1042 overlap closely enough on chemistry and mechanical properties that SAE J403 1042 is often considered as a substitute for IS 1570 (Part 2/Sec 1) 45C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.