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IS 1570 (Part 2/Sec 1) 25C4 vs BS 970 (Part 1) 040A12

Close Alternative — 84.9% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 2/Sec 1) 25C4 (IS 1570 (Part 2/Sec 1):1979) and BS 970 (Part 1) 040A12 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 1570 (Part 2/Sec 1) 25C4 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 040A12 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 2/Sec 1) 25C4 vs BS 970 (Part 1) 040A12 is a 89.5% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 84.9%.

Frequently Compared With IS 1570 (Part 2/Sec 1) 25C4:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04
Match Breakdown
CHEMISTRY MATCH
89.5%
MECHANICAL MATCH
No shared data
OVERALL
84.9%
Specifications
Property IS 1570 (Part 2/Sec 1) 25C4 BS 970 (Part 1) 040A12
Standard IS 1570 (Part 2/Sec 1):1979 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.20-0.30 0.10-0.15
Mn (%) 0.30-0.60 0.30-0.50
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) 25C4 BS 970 (Part 1) 040A12
Tensile Strength 440-540 MPa Not specified
Elongation >=23% Not specified
Typical Applications
IS 1570 (Part 2/Sec 1) 25C4
Not documented
BS 970 (Part 1) 040A12
As-rolled, or as-rolled and softened, steel (section two)
Can IS 1570 (Part 2/Sec 1) 25C4 Be Substituted With BS 970 (Part 1) 040A12?
IS 1570 (Part 2/Sec 1) 25C4 and BS 970 (Part 1) 040A12 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
On M-EX Right Now
IS 1570 (Part 2/Sec 1) 25C4
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BS 970 (Part 1) 040A12
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Frequently Asked Questions
What is the difference between IS 1570 (Part 2/Sec 1) 25C4 and BS 970 (Part 1) 040A12?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 1570 (Part 2/Sec 1) 25C4 be substituted with BS 970 (Part 1) 040A12?
IS 1570 (Part 2/Sec 1) 25C4 and BS 970 (Part 1) 040A12 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.