Both Magnesium and aluminium react in the air so it would be harder to mine

Tacks are made from a harder metal than aluminium, so will easily punch through.

Bronze. Bronze is an alloy of copper an tin and it replaced copper as the primary metal for tools because the alloy is harder than either of its constituents. Aluminum is softer than copper.

Aluminium is lighter and rides harder,fibreglass is heavier and rides more comfortabley

the fish bite the same from both types

Aluminium is actually an element, so the only element in aluminium is aluminium.