The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements.
1000 series are essentially pure aluminum with a minimum 99% aluminum content by weight and can be work hardened.
2000 series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs.
3000 series are alloyed with manganese, and can be work-hardened.
4000 series are alloyed with silicon. They are also known as silumin.
5000 series are alloyed with magnesium, derive most of their strength from work hardening. It is suitable for cryogenic applications and low temperature work. However is susceptible to corrosion above 60°C.
6000 series are alloyed with magnesium and silicon, are easy to machine, and can be precipitation-hardened, but not to the high strengths that 2000, and 7000 can reach.
7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminum alloy.
8000 series is a category mainly used for lithium alloys.

→Temper:
The temper designation follows the cast or wrought designation number with a dash, a letter, and potentially a one to three digit number, e.g. 1100-H16. The definitions for the tempers are:

-H 
Strain hardened (cold worked) with or without thermal treatment
-H1 
Strain hardened without thermal treatment
-H2 
Strain hardened and partially annealed
-H3 
Strain hardened and stabilized by low temperature heating
Second digit 
A second digit denotes the degree of hardness
-HX2 = 1/4 hard
-HX4 = 1/2 hard
-HX6 = 3/4 hard
-HX8 = full hard
-HX9 = extra hard
-O 
Full soft (annealed)

→Chemical properties for usual alloy, according to GB/T3190 -2008.

→Mechanics properties for usual alloy, according to YS/T431-2000