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SAE J403 1045 vs IS 1570 (Part 2/Sec 1) 45C8

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

SAE J403 1045 (SAE J403:2014) and IS 1570 (Part 2/Sec 1) 45C8 (IS 1570 (Part 2/Sec 1):1979) are both steel grades. Both fall under the Carbon Steel category. SAE J403 1045 is typically used for chemistry-only grade; product scope as listed in the composition notes, while IS 1570 (Part 2/Sec 1) 45C8 is commonly 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). SAE J403 1045 is defined under SAE International, originating from United States, while IS 1570 (Part 2/Sec 1) 45C8 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, SAE J403 1045 vs IS 1570 (Part 2/Sec 1) 45C8 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 SAE J403 1045:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 060A47 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A10
Match Breakdown
CHEMISTRY MATCH
97.4%
MECHANICAL MATCH
No shared data
OVERALL
97.4%
Specifications
Property SAE J403 1045 IS 1570 (Part 2/Sec 1) 45C8
Standard SAE J403:2014 IS 1570 (Part 2/Sec 1):1979
Category Carbon Steel Carbon Steel
C (%) 0.43-0.50 0.40-0.50
Mn (%) 0.60-0.90 0.60-0.90
P (%) <=0.030 (flat rolled), <=0.040 (long products) Not specified
S (%) <=0.035 (flat rolled), <=0.050 (long products) Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property SAE J403 1045 IS 1570 (Part 2/Sec 1) 45C8
Tensile Strength Not specified 630-710 MPa
Elongation Not specified >=15%
Typical Applications
SAE J403 1045
Chemistry-only grade; product scope as listed in the composition notes
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)
Key Differences
Can SAE J403 1045 Be Substituted With IS 1570 (Part 2/Sec 1) 45C8?
SAE J403 1045 and IS 1570 (Part 2/Sec 1) 45C8 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 45C8 is often considered as a substitute for SAE J403 1045 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
SAE J403 1045
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5900–6900 mm (232.28–271.65 in)
IS 1570 (Part 2/Sec 1) 45C8
No active listings currently.
On M-EX Right Now
SAE J403 1045
2 active listings and RFQs →
IS 1570 (Part 2/Sec 1) 45C8
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Frequently Asked Questions
What is the difference between SAE J403 1045 and IS 1570 (Part 2/Sec 1) 45C8?
SAE J403 1045 specifies P, S which are not specified for IS 1570 (Part 2/Sec 1) 45C8.
Can SAE J403 1045 be substituted with IS 1570 (Part 2/Sec 1) 45C8?
SAE J403 1045 and IS 1570 (Part 2/Sec 1) 45C8 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 45C8 is often considered as a substitute for SAE J403 1045 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.