6061, 6063 and 6082 aluminum alloy state what is the difference between T5 and T6 state

The 6 series aluminum alloy is Al Mg Si alloy, its representative grades are 6061, 6063 and 6082. Different from the other 7 series aluminum alloy plate, the 6 series aluminum plate to the state of the T state, the most is the T5 and T6 in the state of two. Only difference, the difference between the two states where?

Aluminium 6082

Before explaining the difference between T5 and T6, the user must first understand the following 2 terms:
Ageing: the process of eliminating internal stresses in metals.
Quenching: the metal is heated to a certain temperature to cool down to the required hardness. 2, 6, 7 aluminum plate can be enhanced by quenching treatment.
T5 refers to the aluminum extruded from the extruder after the use of air cooling to reduce the temperature rapidly to achieve the required hardness (Webster 8–12 hardness). The T6 state refers to the aluminum plate extruded from the extruder after cooling the aluminum plate with water cooling, so that the aluminum plate to achieve higher hardness requirements (more than 13.5 webster hardness).
Air cooling cooling time is relatively long, usually there will be 2-3 days, we call it a natural aging; and short cooling time, we call it artificial aging. The main difference between T5 and T6 States is that the intensity of the T6 state is higher than that of the T5 state, and other properties are similar. In terms of price, because of the difference in the production process, T6 state aluminum per ton price higher than the T5 state 500-1000 yuan.
What is the elimination of internal stress
Aluminum plate in the production process, because of heating and extrusion, resulting in uneven density between the crystal, the energy can not be fully released, stored in the aluminum plate, the energy is called internal stress. The production process of some users (such as heating, bending, deep drawing and stretching) will release the internal stress of aluminum plate, aluminum plate, bending caused by moire, the surface is not equal, so you need to release the internal stress of the aluminum plate.
The process of eliminating the internal stress is very simple, in the aluminum plate down the assembly line, the factory will add a process, with the machine to do a stretch of aluminum plate, you can release the energy inside the aluminum plate.
Elimination of internal stress of the aluminum plate with digital Tx51, such as: 6061T651, 6082T651, etc..

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