[TowerTalk] 7075-T6 Aluminum

[Hank Lonberg]

OOPS is my face red.


7075 alloy  is not recommended for welding by fusion methods. Resistance
welding spot and seam of may be readily accomplished with clad material
in T6 condition. Resistance welding of the bare material is not
recommended due to the severe loss in corrosion resistance. Brazing and
soldering are not recommended.

6061 alloy is weldable by any process normally used to weld aluminum
alloys. Brazing and soldiering are feasible but trial runs are
recommended. No loss of corrosion resistance due to welding process.

Hank / KR7X


Brad Bradfield wrote:
> 
> Also, one of these alloys can be welded and the other can't, I believe.
>  Is it the 6000 series that can be welded?
> 
> 73,
> 
> Brad, W5CGH
> 
> ===========
> 
> --- Hank Lonberg <kr7x@gte.net> wrote:
> > Okie Doke Pete:
> >
> > Lets get to know the alloys and treatment.
> >
> > 6000: (6061)
> >
> > A silicon and mangnesium alloy of aluminum. Heat treatable very
> > versatile with good formabliliy and corrosion resistance, medium
> > strength. Very common alloy. Tensile yield strength 6061-T6: 40,000
> > psi.
> > E=10,000,000 psi.
> >
> > 7000:  (7075)
> >
> > A zinc alloy of aluminum. Heat treatable, high strength. Used in
> > air-frame structures and highly stressed parts. Tensile yield
> > strength
> > 7075-T6: 67,000 psi. E=10,000,000 psi.
> >
> 
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