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IS 11169 (Part 1) 40C8 vs BS 970 (Part 1) 040A04

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 40C8 (IS 11169 (Part 1):2022) and BS 970 (Part 1) 040A04 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 11169 (Part 1) 40C8 is typically used for cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex c), while BS 970 (Part 1) 040A04 is commonly used for as-rolled, or as-rolled and softened, steel (section two). IS 11169 (Part 1) 40C8 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 040A04 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 11169 (Part 1) 40C8 vs BS 970 (Part 1) 040A04 is a 65% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 11169 (Part 1) 40C8:
BS 970 (Part 1) 080A20 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 3) 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) 045M10 BS 970 (Part 1) 055M15
Match Breakdown
CHEMISTRY MATCH
65%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property IS 11169 (Part 1) 40C8 BS 970 (Part 1) 040A04
Standard IS 11169 (Part 1):2022 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.35-0.45 <=0.08
Cr (%) <=0.15 Not specified
Cu (%) <=0.15 Not specified
Mn (%) 0.60-0.90 0.30-0.50
Mo (%) <=0.05 Not specified
Ni (%) <=0.15 Not specified
P (%) <=0.035 Not specified
S (%) <=0.035 Not specified
Si (%) 0.10-0.35 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 IS 11169 (Part 1) 40C8 BS 970 (Part 1) 040A04
Core Hardness (CH) >=40 HRC up to 11 mm Not specified
Hardness, annealed (+AC) <=170 HBW Not specified
Typical Applications
IS 11169 (Part 1) 40C8
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
BS 970 (Part 1) 040A04
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can IS 11169 (Part 1) 40C8 Be Substituted With BS 970 (Part 1) 040A04?
IS 11169 (Part 1) 40C8 and BS 970 (Part 1) 040A04 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
On M-EX Right Now
IS 11169 (Part 1) 40C8
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BS 970 (Part 1) 040A04
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 40C8 and BS 970 (Part 1) 040A04?
IS 11169 (Part 1) 40C8 specifies Cr, Cu, Mo, Ni which are not specified for BS 970 (Part 1) 040A04.
Can IS 11169 (Part 1) 40C8 be substituted with BS 970 (Part 1) 040A04?
IS 11169 (Part 1) 40C8 and BS 970 (Part 1) 040A04 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.