| Case 2 | Case 1 | Type of Parameters |
| 650˚C | 700˚C | Preheating temperature of extrusion billet |
| 400˚C - 450˚C | 400˚C - 450˚C | Preheating temperature of extrusion dies |
| 30 mm\sec. | 27 mm\sec. | Extrusion speed |
| 17 | 17 | Extrusion ratio |