Large aluminum discs refer to aluminium circles of diameters bigger than 750mm, the price of which proves to be higher than regular discs below 750mm big. Theoretically all ordinary alloys for aluminium wafers can be made into large discs, here we discuss representative of each series (1xxx, 3xxx, 5xxx): 1070, 3003 and 5052. 1070 contains 99.7% aluminium, proving to be …