... over 99.00%, and main grade is 1050, 1060 and 1100. grade 1050, its aluminium over 99.5%, and grade 1060, its aluminium over ... , 2A06, 3. 3000 series: main grade is 3003, 3A21, ,4. 4000 series: main grade is 4A01, 5. 5000 series: main grades are 5052 ... , 5005, 5083, 5A05. 6. 6000 series: main grade is 6061. Its ...