I think your Al thicknesses are wrong.
Standard Al foil is
0.015 millimetres thick, not .15 millimetres.
This unit of measurement is commonly referred to as a "micron".
Standard thick aluminium from the hardware store (also known as "flashing") is 0.3 millimetres or 300 microns thick.
Pie pans are usually 0.06 to 0.08 millimetres (or 60-80 microns) thick.
If you are using standard aluminium foil (0.015, 15 microns) then DO NOT USE IT IN AN AL/HG!
It is way too reactive.
Pie pans are, usually, best.
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