7075 T652 Forging Aluminum Round Bar

Chemical composition of 7075 aluminum alloy

●Aluminum (Al): balance
●Silicon (Si): 0.4% max
●Ferrum (Fe): 0.5% max
●Copper (Cu): 1.2-2.0%
●Manganese (Mn): 0.3% max
●Magnesium (Mg): 2.1-2.9%
●Chromium (Cr): 0.18-0.28%
●Zinc (Zn): 5.1-6.1%
●Titanium (Ti): 0.2% max
●Other elements: Each 0.05% max, Total 0.15% max

Typical mechanical properties of 7075 T652
For aluminum rod 7075 T652: >φ200mm 

●Tensile strength: ≥440 MPa
●Yield strength: ≥400 MPa 
●Elongation: ≥5%
●Hardness (Brinell): 132 HB

Aluminum 7075 T6 VS T652 / Why choose 7075 T652

In short，T652=T6+Forging（stress relief）

When the diameter of the 7075 T6 aluminum rod reaches about 250mm, due to no that big mould and extruder ,usually make forging rod for larger diameter bar.

Forging can make the internal organization to be fully extended, improve product performance. In addition, after forging, flaw detection will be conducted to reduce the probability of bad problems such as trachoma and porosity.7075 T652 aluminum round bar involves a stress relief treatment after the initial aging process. This results in a lower level of residual stress, which can improve resistance to stress corrosion cracking and other forms of metal fatigue.