7A09 T6 T651 extruded aluminum round bar’s characteristics are: good plasticity after solution treatment, particularly good heat treatment strengthening effect, high strength below 150 ℃, and particularly good low temperature strength; poor welding performance; tendency to stress corrosion cracking; need to be covered with aluminum or other Protective use. Two-stage aging can improve the alloy's resistance to stress corrosion cracking. The plasticity in the annealed and freshly quenched state is slightly lower than 2A12 in the same state. It is slightly better than 7A09, and the plate is subject to static fatigue. The notch is sensitive and the stress corrosion performance is better than 7A09.
7A09 T6 T651 extruded aluminum round bar is widely used in the aviation industry for aircraft skins, wall panels, bulkheads, front beams, ribs, joints, pillars and landing gear and other structural components
Composition of 7A09 T6 T651 extruded aluminum round bar
| Element | Si | Fe | Cu | Mn | Cr | Mg | Zn | Ti | Al |
| 7A09 | ≤0.5 | ≤0.5 | 1.2-2.0 | ≤0.15 | 0.16-0.3 | 2.0-3.0 | 5.1-6.1 | ≤0.1 | Rem |
Mechanical properties of 7A09 T6 T651 extruded aluminum round bar
|
加工方式 Processing |
状态 Temper |
抗拉强度Mpa Tensile Strength |
屈服强度Mpa Yield Strength |
伸长率 Elongation |
硬度HB Hardness |
| Extruded | T6 | ≥490 | ≥410 | ≥4 | 150 |
