Material name
Brand composition
Instructions
Pure aluminum and aluminum processing materials
A+ Digital Example: A5, A7 ? Use a 4 digit code, for example: 1050, 1050A, 1100, 1200, and add "A" at the end of some grades to indicate that it is an alloy derived system in the United States.
The number represents 99 digits after the decimal point. For example, A5 indicates that the aluminum content is > 99.50%, and the front digit is “1â€â€”industrial pure aluminum, and the second digit is “0â€â€”there is no special control over individual impurities; The number "1-9" should be specially controlled for a certain impurity; the third and fourth two-digit number indicates two digits after the decimal point for aluminum content 99
Aluminum alloy processing materials
1 . A- main addition element code and name percentage value + added element code and nominal percentage value 2. It is represented by a 4-digit number, for example: 2011, 3003, 5052
Examples A-G4M, A-U4G1, with the addition of element code in capital letters: G-Mg, K-Co, M-Mn, N-Ni, Pb-Pb, S-Si, T-Ti, U-Cu, Z- The first digit of Zn indicates the classification code: 2 - Aluminum-copper-magnesium system; 3 - Aluminum-manganese system; 4 - Alumino-silicon system; 5 - Aluminum-manganese system; 6 - Al-Si-Mg system; 7 - Aluminum Zinc, magnesium and copper; 8 - aluminum and other elements; second digit "0" for original content: 1 - 9 for modified alloy; fourth and fifth digits for alloy identification
Cast aluminum alloy
Same as the first method of expressing aluminum alloy workpieces
Some add a status code at the tail, such as Y4, etc.
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