The magnesium and silicon are the main chemical element in all 6000 grades aluminium. And 6063 6061 6082 are the most common grades of 6000 series aluminum alloy.
6063 is a medium strength alloy and is commonly used for extruding. 6063 Aluminium also has an excellent surface finish, which is the ideal materials for architectural industrial. T5 and T6 is the most common temper available. 6061 and 6082 are very slightly differences, which is particularly suitable for structural applications and also for welding & machining.