I have some cast aluminium garden chairs.
The screw holding one of the arms got loose and I forgot to tighten it.

Yesterday the top of the arm snapped off, leaving the screw in place.

I have the arm and the s,mall piece that snapped off.
The ends are clean and thankfully not shiny smooth but bright non-the-less.

I have gorilla clue, araldite and regular superglue.

Will any of those be OK or should I buy something else?