Alcor™ is an easy-to-use aluminum alloy with non-corrosive flux inside the wire (no external flux is required). Alcor™ is a good choice for joining aluminum alloys of the 1000, 3000 and 6000 series. It can also be used to join aluminum-to-copper. Designed for the repair of heat exchangers, air conditioners, aluminum alloy condensers and other cooling applications. Complies with the EU Reach & RoHS directive.