IS 11169 (Part 1):2022 10C4GC (case hardening): Cold heading quality non-alloy case hardening steel 10C4GC (case hardening) to IS 11169 (Part 1):2022, for parts case hardened after cold heading or cold extrusion, supplied as wire rod, bars or wire of 2 to 100 mm. Maximum tensile strength as hot rolled is 450 MPa.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Cu
Mn
P
S
Si
0.08-0.12
<=0.25
0.30-0.60
<=0.025
<=0.025
<=0.30
Mechanical Properties
Tensile Strength, as rolled (+AR)
<=450 MPa (over 5 to 100 mm)
More data from IS 11169 (Part 1):2022
From the standard
Other composition limitsfrom the table notes and clauses
Values
Maximum unless a range is given (ladle analysis)
Deoxidation
Aluminium killed (clause 6.2)
Same name in Annex A
The standard also prints 10C4GC in Annex A (Table A.2) for a different steel not intended for heat treatment
Elements not listed are not added intentionally without the purchaser's agreement, except those used to finish the heat.
Source: IS 11169 (Part 1):2022, Table B.2 and its notes, clause 6.2
Tensile strength and reduction of area by delivery conditionby delivery condition and size
Delivery condition
Diameter (mm)
Tensile strength, max (MPa)
Reduction of area, min (%)
+AR or +PE
over 5 to 10
450
58
+AR or +PE
over 10 to 40
450
58
+AR or +PE
over 40 to 100
450
58
+AC or +AC+PE
over 5 to 10
400
65
+AC or +AC+PE
over 10 to 40
400
65
+AC or +AC+PE
over 40 to 100
400
65
+AR+C
over 5 to 10
540
56
+AR+C
over 10 to 40
530
56
+AR+C+AC
2 (incl.) to 5
390
67
+AR+C+AC
over 5 to 10
380
67
+AR+C+AC
over 10 to 40
380
67
+AR+C+AC+LC
2 (incl.) to 5
430
65
+AR+C+AC+LC
over 5 to 10
420
65
+AR+C+AC+LC
over 10 to 40
420
65
+AC+C
over 5 to 10
490
62
+AC+C
over 10 to 40
480
62
Codes: +AR as hot rolled, +PE peeled, +C cold drawn, +AC annealed to spheroidized carbides, +LC skin passed. For non-circular sections the properties are agreed between manufacturer and purchaser. Reduction of area values in the as rolled condition are for information only.
Source: IS 11169 (Part 1):2022, Table B.3
Active IS 11169 (Part 1):2022 10C4GC (case hardening) Listings on M-EX (For Sale)