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7049A T6 aluminum tubes  is an Al-Zn-Mg-Cu alloy tube with high specific strength and is a typical high-strength deformed aluminum alloy. The 7049A aluminum alloy was developed in 1968. On the basis of the 7001 aluminum alloy, the content of alloying elements Cu and Cr was reduced, the Zn / Mg ratio was increased, and the content of Fe and Si impurities was also reduced. It is mainly used to produce T73 forgings and extrusions.
7049A T6 aluminum tubes is used  for parts with the same static strength as 7079-T6 alloy and requiring high resistance to stress corrosion cracking, such as aircraft and missile parts-landing gear hydraulic cylinders and extrusions. The fatigue performance of the parts is roughly equal to that of 7075-T6 alloy, while the toughness is slightly  higher.


 
Composition of 7049A T6 aluminum tubes 

Si	Fe	Cu	Mn	Cr	Zn	Al
Max 0.4	Max 0.5	1.2-1.9	Max 0.5	0.05-0.25	7.2-8.4	rest

Mechanical properties of 7049A T6 aluminum tubes 

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
Extruded	T6	≥610	≥530	≥5