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SAE J403 1029 vs IS 1570 (Part 2/Sec 1) 25C8

Strong Match — 95.3% match based on chemical composition and mechanical property overlap.

SAE J403 1029 (SAE J403:2014) and IS 1570 (Part 2/Sec 1) 25C8 (IS 1570 (Part 2/Sec 1):1979) are both steel grades. Both fall under the Carbon Steel category. SAE J403 1029 is typically used for chemistry-only grade; product scope as listed in the composition notes, while IS 1570 (Part 2/Sec 1) 25C8 is commonly used for billets and bars for forgings, carbon steel forgings, flame and induction hardened parts, hardened and tempered parts and welded round link chains (the standard links this grade to is 1875, is 2004, is 3930, is 5517, is 6967). SAE J403 1029 is defined under SAE International, originating from United States, while IS 1570 (Part 2/Sec 1) 25C8 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, SAE J403 1029 vs IS 1570 (Part 2/Sec 1) 25C8 is a 95.3% 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 95.3%.

Frequently Compared With SAE J403 1029:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 070M26 BS 970 (Part 3) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
95.3%
MECHANICAL MATCH
No shared data
OVERALL
95.3%
Specifications
Property SAE J403 1029 IS 1570 (Part 2/Sec 1) 25C8
Standard SAE J403:2014 IS 1570 (Part 2/Sec 1):1979
Category Carbon Steel Carbon Steel
C (%) 0.25-0.31 0.20-0.30
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 1029 IS 1570 (Part 2/Sec 1) 25C8
Tensile Strength Not specified 470-570 MPa
Elongation Not specified >=22%
Typical Applications
SAE J403 1029
Chemistry-only grade; product scope as listed in the composition notes
IS 1570 (Part 2/Sec 1) 25C8
Billets and bars for forgings, carbon steel forgings, flame and induction hardened parts, hardened and tempered parts and welded round link chains (the standard links this grade to IS 1875, IS 2004, IS 3930, IS 5517, IS 6967)
Key Differences
Can SAE J403 1029 Be Substituted With IS 1570 (Part 2/Sec 1) 25C8?
SAE J403 1029 and IS 1570 (Part 2/Sec 1) 25C8 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 25C8 is often considered as a substitute for SAE J403 1029 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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SAE J403 1029
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IS 1570 (Part 2/Sec 1) 25C8
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Frequently Asked Questions
What is the difference between SAE J403 1029 and IS 1570 (Part 2/Sec 1) 25C8?
SAE J403 1029 specifies P, S which are not specified for IS 1570 (Part 2/Sec 1) 25C8.
Can SAE J403 1029 be substituted with IS 1570 (Part 2/Sec 1) 25C8?
SAE J403 1029 and IS 1570 (Part 2/Sec 1) 25C8 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 2/Sec 1) 25C8 is often considered as a substitute for SAE J403 1029 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.