Harris ER5356 .030 Diameter Aluminum MIG Welding Wire - 1 spool 05356E1 1 lb. Spool - Harris ER5356 .030 diameter Aluminum MIG welding wire is an all position non - heat treatable MIG wire used to weld the 5XXX series alloys when 40. 000 psi tensile strength is not a requirement. 5356 is a very good all purpose wire. It is the most widely used of all aluminum fillers metals. Common applications are welding of boats ships, bicycles, trucks, pressure vessels and automotive parts. Qualified to AWS A5.10 ER5356.