Basic knowledge of aluminum alloy
- Editor: liefan, October 31, 2019 14:00:01
1、 Classification: stretching materials are divided into non heat treatment alloy and heat treatment alloy
1.1 non heat treatment alloy: pure aluminum-1000 series, aluminum manganese alloy-3000 series, aluminum silicon alloy - 4000 series, aluminum magnesium alloy - 5000 series.
1.2 heat treatment alloy: Al Cu mg alloy-2000 series, Al Mg Si alloy-6000 series, Al Zn mg alloy-7000 series.
2、 Alloy number: the number of Aluminum Association commonly used in China is aluminum association number. This is to say
Examples are as follows: 1070-h14 (pure aluminum)
2019-t4 (heat treatment alloy)
3004-h32 (non heat treated alloy)
2.1 the first digit: indicates the main added alloy elements.
1: Pure aluminum
2: The main alloying element is copper
3: The main alloying elements are manganese or manganese and magnesium
4: The main alloying element is silicon
5: The main alloying element is magnesium
6: The main alloying elements are silicon and magnesium
7: Zinc and magnesium are the main elements
8: New alloys not belonging to the above alloy series
2.2 second digit: it refers to the alloy whose content of alloy elements or impurities has been modified in the original alloy.
0: primary alloy
1: The original alloy was modified for the first time
2: The original alloy was modified for the second time
2.3 third and fourth digits:
Pure aluminum: original alloy
Alloy: Code for individual alloy
＂-″： The following HN or TN indicates the strength symbol of work hardening or heat treatment
-HN: strength symbol of non heat treatment alloy
-TN: the strength symbol of heat-treated alloy
Heat treatment of aluminum and aluminum alloy
1、 Strength symbol: if the addition of alloying elements is not enough to fully meet the requirements, cold working, water quenching and aging are required
To obtain the required strength and properties. These processes are called processes
It is conditioning, and the result of tempering is the degree of strength.
Definition of degree symbol
The strength of F manufacturing state
Products manufactured without specific strength, such as extrusion, hot rolling, forging, etc.
H112 finished products without deliberate control of work hardening, but mechanical properties must be guaranteed.
O soft burn strength
Completely recrystallized and in the softest state. In the case of heat-treated alloys, Then it should be cooled slowly from the soft firing temperature to prevent the effect of water quenching completely.
H strength of work hardening
H1N: work hardening by cold working
H2n: work hardening followed by moderate soft burning
H3n: work hardening followed by stabilization
The degree of work hardening is expressed in the number of 1 ~ 9
N = 2 is 1 / 4 hard
N = 4 is 1 / 2 hard
N = 6 means 3 / 4 hard
N = 8 means hard
N = 9 for superhard
T 1: natural aging after high temperature processing and cooling. The extrusion is cooled rapidly after hot working, Then, it was treated with ten effect hardening at regular temperature. It can also be applied with corrective processing which does not affect the strength, This kind of quenching and tempering is suitable for the alloy with quenching effect after hot working, such as 6063.
T3: the purpose of cold working after melt treatment is to improve strength, flatness and dimensional accuracy.
T36: T3 treated by 6% cold processing.
T361: higher cold working degree than T3.
- Price comparison strategy of buying broken bridge aluminum doors and windows [ Back to home page ] [ Printing ] [ Back to previous page ] What are the advantages of broken bridge aluminum doors and windows?