Works well on most kinds of sheet and cast aluminum These rods can be used with TIG welding machines or with gas torches When using a gas torch, aluminum flux is required * 27,000 PSI tensile strength Melting Point: 1,170-Degree F (632-Degree C) AWS 510 Class ER4043 * Diameter 1/8-Inch * Great for the farm, ranch, auto body, construction and plumbing * Length: 36-Inch