Optional: We include 50 low temperature aluminum solder wires, they have 2 sizes, 50cm x 2mm and 33cm x 2mm, you can choose according to your requirement. Features: Low temperature aluminum welding wire with 12% silicone. It has a lower melting point and finer solidification interval than 4043 solder wire. It has high silicone content, good fluidity and minimizes the tendency of thermal cracking. Increases the shear strength of the weld. Application: This kind of low temperature aluminum welding wire can weld almost all white metals including aluminum, aluminum alloy, cast aluminum, aluminum and magnesium alloy, etc. / p> Large Usage: Low temperature aluminum welding wire is suitable for welding or alloy surface welding with high strength, good malleability and good corrosion resistance. Friendly Service: If you have any questions, please email us as soon as possible, and we'll do our best to resolve it for you on time.