IS 11169 (Part 1):2022 4C3 Steel: Specifications & Listings
IS 11169 (Part 1):2022 4C3: Cold heading quality non-alloy steel 4C3 to IS 11169 (Part 1):2022, for parts that are not heat treated 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 390 MPa.
Cold heading and cold extrusion of parts not heat treated after cold forming; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex A)
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
Al
C
Cr
Cu
Mn
Mo
Ni
P
S
Si
0.020-0.060
0.02-0.06
<=0.30
<=0.30
0.25-0.40
<=0.10
<=0.30
<=0.020
<=0.025
<=0.10
Mechanical Properties
Reduction of Area, as rolled (+AR)
>=70% (for information)
Tensile Strength, as rolled (+AR)
<=390 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)
Cr + Ni + Mo, maximum
0.50 percent
Aluminium
May be replaced by another element or elements with a similar effect
Deoxidation
Killed steel; aluminium killed, silicon killed or both (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 A.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 +AR+PE
over 5 to 10
390
70
+AR or +AR+PE
over 10 to 40
390
70
+AR or +AR+PE
over 40 to 100
390
70
+AC or +AC+PE
over 5 to 10
330
75
+AC or +AC+PE
over 10 to 40
330
75
+AC or +AC+PE
over 40 to 100
330
75
+AR+C
over 5 to 10
470
66
+AR+C
over 10 to 40
460
66
+AR+C+AC
2 (incl.) to 5
320
77
+AR+C+AC
over 5 to 10
310
77
+AR+C+AC
over 10 to 40
300
77
+AR+C+AC+LC
2 (incl.) to 5
360
73
+AR+C+AC+LC
over 5 to 10
350
73
+AR+C+AC+LC
over 10 to 40
350
73
+AC+C
over 5 to 10
410
70
+AC+C
over 10 to 40
400
70
Codes: +AR as hot rolled, +PE peeled, +C cold drawn, +AC annealed to spheroidized carbides, +LC skin passed. Reduction of area values are for information only. For non-circular sections the properties are agreed between manufacturer and purchaser.
Source: IS 11169 (Part 1):2022, Table A.3
Active IS 11169 (Part 1):2022 4C3 Listings on M-EX (For Sale)