Optional: we include 50 low temperature aluminum welding wires. they have 2 sizes. 50 cm x 2 mm and 33 cm x 2 mm. you can choose according to your needs. 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 a high silicone content. good fluidity and minimizes the tendency for thermal cracks. Increases the shear strength of the weld. Application: This type of low temperature aluminum welding wire can weld almost all white metals. including aluminum. aluminum alloy. cast aluminum. the alloy of aluminum and magnesium. etc. Wide Usage: Low temperature aluminum welding wire is suitable for welding or alloy surface welding with high strength. good malleability and corrosion resistance. Friendly service: if you have any questions. please contact us by email as soon as possible. and we will do our best to resolve it for you on time.