Grades of aluminium and aluminium alloys
2023-03-18 11:33
(1) The brand nominating method of pure aluminum: when the aluminum content is not less than 99.00%, it is pure aluminum, and its brand is expressed by the 1XXX series. The last two digits of the grade indicate the minimum aluminum content. When the minimum aluminum percentage is accurate to 0.01%, the last two digits of the grade are the two digits after the decimal point in the minimum aluminum percentage. The second letter of the grade indicates the modification of the original pure aluminum. If the second letter is A, it is the original pure aluminum; If it is other letters from B to Y (selected in the order of the alphabet according to international regulations), it is expressed as a modification of the original pure aluminum, and its element content is slightly changed compared with the original pure aluminum.
(2) The brand nomenclature of aluminum alloy: the brand of aluminum alloy is indicated by the 2XXX~8XXX series. The last two digits of the grade have no special significance and are used only to distinguish different aluminum alloys in the same group. The second letter of the grade indicates the modification of the original alloy. If the second letter of the grade is A, it is the original alloy; If it is other letters from B to Y (selected in alphabetical order according to international regulations), it is represented as a modified alloy of the original alloy.
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