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IS 11169 (Part 1) 40C8 vs IS 11169 (Part 1) 45C8

Strong Match — 96.2% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 40C8 (IS 11169 (Part 1):2022) and IS 11169 (Part 1) 45C8 (IS 11169 (Part 1):2022) 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 IS 11169 (Part 1) 45C8 is commonly 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). IS 11169 (Part 1) 40C8 is defined under Bureau of Indian Standards (IS), originating from India, while IS 11169 (Part 1) 45C8 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 11169 (Part 1) 40C8 vs IS 11169 (Part 1) 45C8 is a 94.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 96.2%.

Frequently Compared With IS 11169 (Part 1) 40C8:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
94.3%
MECHANICAL MATCH
100%
OVERALL
96.2%
Specifications
Property IS 11169 (Part 1) 40C8 IS 11169 (Part 1) 45C8
Standard IS 11169 (Part 1):2022 IS 11169 (Part 1):2022
Category Carbon Steel Carbon Steel
C (%) 0.35-0.45 0.40-0.50
Cr (%) <=0.15 <=0.15
Cu (%) <=0.15 <=0.15
Mn (%) 0.60-0.90 0.60-0.90
Mo (%) <=0.05 <=0.05
Ni (%) <=0.15 <=0.15
P (%) <=0.035 <=0.035
S (%) <=0.035 <=0.035
Si (%) 0.10-0.35 0.10-0.35
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 IS 11169 (Part 1) 45C8
Core Hardness (CH) >=40 HRC up to 11 mm >=40 HRC up to 12 mm
Hardness, annealed (+AC) <=170 HBW <=170 HBW
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)
IS 11169 (Part 1) 45C8
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)
Can IS 11169 (Part 1) 40C8 Be Substituted With IS 11169 (Part 1) 45C8?
IS 11169 (Part 1) 40C8 and IS 11169 (Part 1) 45C8 overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 45C8 is often considered as a substitute for IS 11169 (Part 1) 40C8 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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IS 11169 (Part 1) 40C8
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IS 11169 (Part 1) 45C8
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 40C8 and IS 11169 (Part 1) 45C8?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 11169 (Part 1) 40C8 be substituted with IS 11169 (Part 1) 45C8?
IS 11169 (Part 1) 40C8 and IS 11169 (Part 1) 45C8 overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 45C8 is often considered as a substitute for IS 11169 (Part 1) 40C8 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.