 -  The first paragraph of the 'notable characteristics' section states that aluminium is both soft and strong. This seems unlikely to be the case. In the case of pure aluminium the yield strength is in the region of 10 MPa which certainly isn't strong as far as construction materials are concerned (Al alloys may have yield strengths in the region of 200-500 MPa). As a result I have removed the word strong (alloying is mentioned later anyway).  Surely aluminium is not resistent to magnetism but is simply non-magnetic? I have altered the 'applications' section to reflect this (and hopefully I'm right).  The term 'weak' is ambiguous (strength, stiffness, hardness, toughness, fatigue resistance?). I replaced it with a link to tensile strength as this is probably the most familar mechanical property.