7A09 T6 T651 extruded aluminum round bar

7A09 T6 T651 extruded aluminum round bar is an Al-Zn-Mg-Cu series super-hard aluminum bar. This alloy is an ultra-high-strength deformed aluminum alloy that has been used in the aircraft industry since the late 1940s and is still widely used in the aviation industry.
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