Which kind of glue can bond hard shell plastic and iron sheet or aluminum sheet?
you can use 520 or AB glue, and I think 520 is better.
You can buy the glue for bonding wood in hardware shop, 402 or 502 are all ok.
You can use 502, Alteco and other instant glue to bond plastic and metal, chloroprene rubber adhesive or glass cement are also ok.
502 or AB glue (there are two glues, they won’t bond together while separated, but the viscidity is strong after being mixed together. They usually are used for bonding cars accessories.) you can buy them in hardware shop or auto supply store.