IS 11169 (Part 1):2022 20C4GC Steel: Specifications & Listings
IS 11169 (Part 1):2022 20C4GC: Cold heading quality non-alloy case hardening steel 20C4GC 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 530 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
0.18-0.22
<=0.25
0.30-0.60
<=0.025
<=0.025
<=0.30
Mechanical Properties
Tensile Strength, as rolled (+AR)
<=530 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)
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
530
58
+AR or +PE
over 10 to 40
530
58
+AR or +PE
over 40 to 100
530
58
+AC or +AC+PE
over 5 to 10
470
65
+AC or +AC+PE
over 10 to 40
470
65
+AC or +AC+PE
over 40 to 100
470
65
+AR+C
over 5 to 10
640
56
+AR+C
over 10 to 40
630
56
+AR+C+AC
2 (incl.) to 5
460
67
+AR+C+AC
over 5 to 10
450
67
+AR+C+AC
over 10 to 40
450
67
+AR+C+AC+LC
2 (incl.) to 5
500
65
+AR+C+AC+LC
over 5 to 10
490
65
+AR+C+AC+LC
over 10 to 40
490
65
+AC+C
over 5 to 10
580
62
+AC+C
over 10 to 40
570
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 20C4GC Listings on M-EX (For Sale)