| Type designation for the treatment of foundry aluminium |
Designation of moulding processes |
Symbolisation of the procurement method |
Symbolisation of the delivery status |
| F |
Rough cast |
S |
Sand casting |
Y0 |
Undefined |
0 |
No treatment |
| 0 |
Annealing |
K |
Sand casting |
Y0 |
Undefined |
0 |
No treatment |
| T4 |
Tempering + natural maturation at room temperature |
D |
Die-casting |
Y2 |
Sand foundry |
2 |
Soaked |
| T5 |
Controlled cooling after solidification + extra income |
L |
Precision casting (lost wax) |
Y3 |
Gravity die casting |
3 |
Soaking + tempering |
| T6 |
Quenching + tempering at peak hardness |
|
|
Y4 |
Die casting |
4 |
Stabilised |
| T64 |
Soaking + artificial ripening in the oven |
|
|
Y5 |
Sintering (concretion) |
5 |
Stabilised |
| T7 |
Hardening + over tempering to reduce hardness and increase elongation |
Ex : EN AC-42000-K-T6 = Die-casting with quenching + tempering |
Ex : Y30 = gravity die-casting without treatment Y33 = gravity die-casting + tempering |
