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IS 11169 (Part 1) 15C4GC (case hardening) vs BS 970 (Part 1) 040A12

Close Alternative — 82.1% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 15C4GC (case hardening) (IS 11169 (Part 1):2022) and BS 970 (Part 1) 040A12 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. IS 11169 (Part 1) 15C4GC (case hardening) is typically used for cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex b), while BS 970 (Part 1) 040A12 is commonly used for as-rolled, or as-rolled and softened, steel (section two). IS 11169 (Part 1) 15C4GC (case hardening) 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 11169 (Part 1) 15C4GC (case hardening) vs BS 970 (Part 1) 040A12 is a 82.1% 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 82.1%.

Frequently Compared With IS 11169 (Part 1) 15C4GC (case hardening):
BS 970 (Part 3) 070M55 BS 970 (Part 1) 080A20 BS 970 (Part 1) 040A10 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A32 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
82.1%
MECHANICAL MATCH
No shared data
OVERALL
82.1%
Specifications
Property IS 11169 (Part 1) 15C4GC (case hardening) BS 970 (Part 1) 040A12
Standard IS 11169 (Part 1):2022 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.13-0.17 0.10-0.15
Cu (%) <=0.25 Not specified
Mn (%) 0.30-0.60 0.30-0.50
P (%) <=0.025 Not specified
S (%) <=0.025 Not specified
Si (%) <=0.30 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) 15C4GC (case hardening) BS 970 (Part 1) 040A12
Tensile Strength, as rolled (+AR) <=480 MPa (over 5 to 100 mm) Not specified
Typical Applications
IS 11169 (Part 1) 15C4GC (case hardening)
Cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex B)
BS 970 (Part 1) 040A12
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can IS 11169 (Part 1) 15C4GC (case hardening) Be Substituted With BS 970 (Part 1) 040A12?
IS 11169 (Part 1) 15C4GC (case hardening) 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 11169 (Part 1) 15C4GC (case hardening)
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BS 970 (Part 1) 040A12
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 15C4GC (case hardening) and BS 970 (Part 1) 040A12?
IS 11169 (Part 1) 15C4GC (case hardening) specifies Cu, P, S, Si which are not specified for BS 970 (Part 1) 040A12.
Can IS 11169 (Part 1) 15C4GC (case hardening) be substituted with BS 970 (Part 1) 040A12?
IS 11169 (Part 1) 15C4GC (case hardening) 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.