5000 series aluminium alloy belongs to the more commonly used alloy aluminium series, the main element is magnesium, the magnesium content is between 3-5%. The main characteristics are low density, high tensile strength and high elongation. 6000 Series. 6063, 6061, 6060, 6351, 6070, 6181, 6082, 6A02. Alumin i um M agnesium S ilicon A lloys.