| Grade | Chemical Composition % | |||||||||
| Al≥ | impurities ≤ | |||||||||
| Si | Fe | Cu | Ga | Mg | Zn | Mn | others | Sum | ||
| Al99.9 | 99.90 | 0.50 | 0.07 | 0.005 | 0.02 | 0.01 | 0.025 | - | 0.010 | 0.10 |
| Al99.85 | 99.85 | 0.80 | 0.12 | 0.005 | 0.03 | 0.02 | 0.030 | - | 0.015 | 0.15 |
| Al99.7 | 99.70 | 0.10 | 0.20 | 0.010 | 0.03 | 0.02 | 0.030 | - | 0.030 | 0.30 |
| Al99.6 | 99.60 | 0.16 | 0.25 | 0.010 | 0.03 | 0.03 | 0.030 | - | 0.030 | 0.40 |
| Al99.5 | 99.50 | 0.22 | 0.30 | 0.020 | 0.03 | 0.05 | 0.050 | - | 0.030 | 0.50 |
| Al99.00 | 99.00 | 0.42 | 0.50 | 0.020 | 0.03 | 0.05 | 0.050 | - | 0.050 | 1.00 |
Industrial aluminum ingots
The raw material in our daily industry is called aluminum ingot, which is called “aluminum ingot for remelting” according to the national standard (GB/T 1196-2008). It is produced by electrolysis from alumina-cryolite.
After aluminum ingots enter into industrial applications, there are two categories: cast aluminum alloys and deformed aluminum alloys. Cast aluminum and aluminum alloys are castings produced by casting methods; wrought aluminum and aluminum alloys are processed products produced by pressure processing methods: plates, strips, foils, tubes, bars, shapes, wires, and forgings. According to the national standard “Aluminum ingots for remelting are divided into 8 grades according to chemical composition, namely Al99.90, Al99.85, Al99.70, Al99.60, Al99.50, Al99.00, Al99.7E, Al99. 6E” (Note: the number after Al is the aluminum content). Some people call it “A00″ aluminum, which is actually aluminum with a purity of 99.7% aluminum, which is called “standard aluminum” in the London market. “A00″ is the Russian brand in the Soviet national standard, “A” is the Russian letter, not the English “A” character, nor the “A” of the Chinese Pinyin alphabet. If it is in line with international standards, it is better to call “standard aluminum” exact. Standard aluminium is an aluminium ingot containing 99.7% aluminium and it is what is registered in the London market.
Several common aluminum ingots
Aluminum ingot for remelting–15kg, 20kg (≤99.80%Al):
T-shaped aluminum ingot–500kg, 1000kg (≤99.80%Al):
High-purity aluminum ingot–l0kg, 15kg (99.90%～99.999%Al);
Aluminum alloy ingot–10kg, 15kg (Al–Si, Al–Cu, Al–Mg);
Plate ingot–500～1000kg (for plate making);
Round ingot–30～60kg (for wire drawing).
