C4C - Nr.1.0303
Steel with a very low carbon content, intended for the cold forming of very deformed and difficult-to-obtain small parts.
References and Comparable Standards
Standard Reference: EN 10263-2: 2017
| EUROPE |
ITALY |
GERMANY |
FRANCE |
UK |
USA |
| EN 10263-2: 2001 |
(UNI 7356 - 74) |
(DIN 1654-2:89) |
(NFA35-564:83) |
- |
ASTM |
| Grade |
N° |
|
Werkstoff |
N° |
|
|
|
| C4C |
1.0303 |
CB4FF |
QSt32-3 |
- |
XC6FF |
- |
- |
Chemical Composition (Cast Analysis) (%)
| C |
Si/max |
Mn |
P/max |
S/max |
Al |
| 0,02÷0,06 |
0,10 |
0,25÷0,40 |
0,020 |
0,025 |
0,020÷0,060 |
Mechanical Properties
Size
(mm) |
Untreadted (+U) or Untreadted + Peeled (+U +PE) |
Spheroidized (+AC) or as Treated + Peeled (+AC +PE) |
Cold Drawn (+U +C) |
Cold Drawn + Spheroidized + Skin Passed (+U +C +AC + LC) |
Spheroidized + Cold Drawn (+AC +C) |
| Rm (MPa) max |
Z (%) min |
Rm (MPa) max |
Z (%) min |
Rm (MPa) max |
Z (%) min |
Rm (MPa) max |
Z (%) min |
Rm (MPa) max |
Z (%) min |
| 2≤d≤5 |
- |
- |
- |
- |
- |
- |
242 |
73 |
- |
- |
| 5<d≤10 |
390 |
70 |
330 |
75 |
470 |
66 |
238 |
73 |
410 |
70 |
| 10<d≤40 |
390 |
70 |
330 |
75 |
460 |
66 |
222 |
73 |
400 |
70 |
| 40<d≤100 |
390 |
70 |
330 |
75 |
- |
- |
184 |
- |
- |
- |
Working Temperatures Recommended
| Operation |
°C |
| Hot forgings deformation |
800÷1100 |
| Soft annealing |
650÷700 |
