Technical data for C4C cold heading wire, compliant with ISO 4954-Appendix A. View the chemical composition, mechanical properties, and related technical requirements for this grade.
Only data directly related to this material is shown here. Inspection, equipment, process and packaging information is linked separately.
1. Combinations of delivery conditions
Table A.1 – Combinations of heat treatment condition at delivery, product form, and applicable requirements
Delivery condition
Symbols
Product form a
Applicable requirements
Wire rod
Bar
Wire
Untreated (as hot-rolled)
+AR
X
X
-
Chemical composition as specified in Table A.2
Mechanical properties as specified in Table A.3
Supplementary or special requirements as specified in Annex Eb
peeled Untreated+
peeled
+AR+PE
X
X
-
Cold drawn
+AR+C
-
X
X
Cold drawn + spheroidized
+AR+C+AC
-
X
X
Cold drawn + spheroidized + skin-passed
+AR+C+AC+LC
-
X
X
Annealed to achieve spheroidized carbides +
As treated or peeled
+AC or AC+PE
X
X
-
cold drawn
+AC+C
-
X
X
Other
Other delivery conditions may be agreed at the time of ordering
a X=applicable,—=not applicable b Ifagreed at the time of enquiry and order.
2. Chemical composition
Table A.2 – Chemical composition of steels not intended for heat treatment after cold working (applicable to cast analysis) a
Steel name
%mass fraction a
C
Si
Mn
P
S
Cr
Ni
Mo
Al b
Cu
Cr+Ni+Mo
C4C
0,02 to 0,06
0,10
0,25 to 0,40
0,020
0,025
0,30
0,30
0,10
0,020 to 0,060
0,30
0,50
1111111
1111111
3. Mechanical properties
Table A.3 – Mechanical properties of wire, bars, and wire not intended for heat treatment after cold working
Steel name
Diameter
Delivery Condition
+AR or +AR+PE
+AC or+AC+PE
+AR+C
+AR+C+AC
+AR+C+AC+LC
+AC+C
above mm
up to mm
Rm max. MPa
Z min. %
R max. MPa
Z min. %
Rm max MPa
Zmin %
Rm max MPa
Min. %
Rmax MPa
Min. %
R max. MPa
Min. %
C4C
2
5
320
77
360
73
5
10
390
70
330
75
470
66
310
77
350
73
410
70
10
40
390
70
330
75
460
66
300
77
350
73
400
70
40
100
390
70
330
75
—
—
—
a The values are provided for reference only.
4. Hardenability requirements
TECHNICAL NOTE
Application and ordering note
Chemical composition, mechanical properties, tolerances and delivery condition must be confirmed against the applicable standard edition, customer drawing and order specification.
