ER1100 is highly resistant to chemical attacks and weathering.  It is a relatively soft alloy that is very formable and is used extensively in thin gauge and foil products.  It has good wetting characteristics and it is also used as a filler alloy for welding purposes.  A desirable characteristic of the alloy is the bright finishes obtained by anodizing.

Application:

Type ER1100 can be used to weld base materials types 1060, 1070, 1080, and 3003.

Welding Filler Wire
Heat Exchangers
Food Handling Equipment
Rivets
Anodising 

The proper choice of aluminium filler metal mainly depends on the base metal properties to be achieved and the welding technique. Post weld cracking, corrosion resistance and behaviour under elevated temperatures also need to be taken into consideration. Cracking usually can be minimized by choosing a filler metal alloy of higher alloy content than the base metal.