Approved Aluminium Welding Wires for Automotive repair
AlMg 5356 is typically chosen because of its relatively high shear strength compared to AlSi4043 . It's generally used in structural parts of the vehicle.
Alloy wheel repair is recommended with this grade of wire due to the increased strength in the HAZ zone.
The 5XXX alloy base material, welded with 5356, with a weld pool chemistry greater than 3% Mg and service temperatures in excess of 65°C are susceptible to stress corrosion cracking.
AlMg 5356 alloy is non-heat treatable as it weakens the shear strength.