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IS 11169 (Part 1) 20C4GC vs IS 11169 (Part 1) 17C8GC (case hardening)

Strong Match — 91.3% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 20C4GC (IS 11169 (Part 1):2022) and IS 11169 (Part 1) 17C8GC (case hardening) (IS 11169 (Part 1):2022) are both steel grades. Both fall under the Carbon Steel category. IS 11169 (Part 1) 20C4GC 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 IS 11169 (Part 1) 17C8GC (case hardening) is commonly 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). IS 11169 (Part 1) 20C4GC is defined under Bureau of Indian Standards (IS), originating from India, while IS 11169 (Part 1) 17C8GC (case hardening) is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 11169 (Part 1) 20C4GC vs IS 11169 (Part 1) 17C8GC (case hardening) is a 86.9% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 91.3%.

Frequently Compared With IS 11169 (Part 1) 20C4GC:
BS 970 (Part 1) 040A10 BS 970 (Part 3) 070M55 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 040A04 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
86.9%
MECHANICAL MATCH
100%
OVERALL
91.3%
Specifications
Property IS 11169 (Part 1) 20C4GC IS 11169 (Part 1) 17C8GC (case hardening)
Standard IS 11169 (Part 1):2022 IS 11169 (Part 1):2022
Category Carbon Steel Carbon Steel
C (%) 0.18-0.22 0.15-0.19
Cu (%) <=0.25 <=0.25
Mn (%) 0.30-0.60 0.60-0.90
P (%) <=0.025 <=0.025
S (%) <=0.025 <=0.025
Si (%) <=0.30 <=0.30
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) 20C4GC IS 11169 (Part 1) 17C8GC (case hardening)
Tensile Strength, as rolled (+AR) <=530 MPa (over 5 to 100 mm) <=530 MPa (over 5 to 100 mm)
Typical Applications
IS 11169 (Part 1) 20C4GC
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)
IS 11169 (Part 1) 17C8GC (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)
Can IS 11169 (Part 1) 20C4GC Be Substituted With IS 11169 (Part 1) 17C8GC (case hardening)?
IS 11169 (Part 1) 20C4GC and IS 11169 (Part 1) 17C8GC (case hardening) overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 17C8GC (case hardening) is often considered as a substitute for IS 11169 (Part 1) 20C4GC in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
IS 11169 (Part 1) 20C4GC
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IS 11169 (Part 1) 17C8GC (case hardening)
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 20C4GC and IS 11169 (Part 1) 17C8GC (case hardening)?
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) 20C4GC be substituted with IS 11169 (Part 1) 17C8GC (case hardening)?
IS 11169 (Part 1) 20C4GC and IS 11169 (Part 1) 17C8GC (case hardening) overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 17C8GC (case hardening) is often considered as a substitute for IS 11169 (Part 1) 20C4GC in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.