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IS 1570 (Part 4) 37C15 vs BS 970 (Part 1) 080A20

Close Alternative — 80% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 37C15 (IS 1570 (Part 4):1988) and BS 970 (Part 1) 080A20 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 1570 (Part 4) 37C15 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 080A20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 1570 (Part 4) 37C15 vs BS 970 (Part 1) 080A20 is a 80% 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 80%.

Frequently Compared With IS 1570 (Part 4) 37C15:
BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
80%
MECHANICAL MATCH
No shared data
OVERALL
80%
Specifications
Property IS 1570 (Part 4) 37C15 BS 970 (Part 1) 080A20
Standard IS 1570 (Part 4):1988 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.32-0.42 0.18-0.23
Si (%) 0.10-0.35 Not specified
Mn (%) 1.30-1.70 0.70-0.90
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 4) 37C15 BS 970 (Part 1) 080A20
Tensile Strength 890-1040 MPa Not specified
Yield Strength >=650 MPa (0.2 % proof stress) Not specified
Elongation >=15% Not specified
Izod Impact >=41 J Not specified
Hardness 255-311 HBS (guidance only) Not specified
Condition Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 15 mm Not specified
Typical Applications
IS 1570 (Part 4) 37C15
Not documented
BS 970 (Part 1) 080A20
Used for nuts, bolts, hydraulic fittings, precision turned parts, sleeves, and couplings.
Key Differences
Can IS 1570 (Part 4) 37C15 Be Substituted With BS 970 (Part 1) 080A20?
IS 1570 (Part 4) 37C15 and BS 970 (Part 1) 080A20 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.
Forms & Sizes Available on M-EX
IS 1570 (Part 4) 37C15
No active listings currently.
BS 970 (Part 1) 080A20
Round Bar → (2 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 4800–6600 mm (188.98–259.84 in)
On M-EX Right Now
IS 1570 (Part 4) 37C15
0 active listings and RFQs →
BS 970 (Part 1) 080A20
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 37C15 and BS 970 (Part 1) 080A20?
IS 1570 (Part 4) 37C15 specifies Si which is not specified for BS 970 (Part 1) 080A20.
Can IS 1570 (Part 4) 37C15 be substituted with BS 970 (Part 1) 080A20?
IS 1570 (Part 4) 37C15 and BS 970 (Part 1) 080A20 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.