7A04 super hard aluminum alloy tube introduction
7A04 super hard aluminum alloy tube is an ultra-high strength aluminum alloy of Al-Zn-Mg-Cu. It is the most commonly used super-hard aluminum. It is quite mature in super-hard aluminum. It is an alloy that is used for a long time and has a high strength. , heat treatment strengthening effect is good, is an aluminum alloy type
7A04 super hard aluminum alloy tube characteristics and scope of application
7A04 super-hard aluminum alloy tube is the most commonly used super-hard aluminum, which is a high-strength alloy and can be heat-treated. It is usually used in the quenching artificial aging state. At this time, the strength is much higher than that of the general hard aluminum, but the plasticity is low; the extruded semi-finished product and the aluminum-clad plate which are not too thick in cross section have good corrosion resistance and tend to stress concentration. The spot weldability is good, the gas welding is poor, and the machinability is good after heat treatment and low in the annealed state.
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A04 super-hard aluminum alloy tube is an Al-Zn-Mg-Cu ultra-high-strength aluminum alloy, also known as super-hard aluminum. It is a mature alloy in super-hard aluminum. It is a long-lasting and widely used alloy. High strength, good heat treatment strengthening effect, moderate plasticity under annealing and new quenching conditions; unlike hard aluminum, the corrosion resistance under artificial aging is better than that of natural aging, and the natural aging process is slow, requiring 3 After the month, the age hardening peak can be reached, so 7A04 is used in the quenching artificial aging state. The disadvantage is that the stability of the structure is not high, the low-frequency fatigue strength is low, and there is a tendency of stress corrosion cracking. The alloy spot weld has good weldability, poor gas welding, good machinability after heat treatment, but poor machinability after annealing.
The chemical composition of
7A04 super hard aluminum alloy tube
Aluminum Al: balance silicon Si: ≤0.50
Copper Cu: 1.4 to 2.0
Magnesium Mg: 1.8 to 2.8 zinc Zn: 5.0 to 7.0
Manganese Mn: 0.20-0.6
Titanium Ti : ≤ 0.10
Chromium Cr: 0.10 to 0.25
Iron Fe: 0.000~ 0.500
Note: Single: ≤ 0.05; Total: ≤ 0.10
The application of
7A04 super hard aluminum alloy tube
7A04 super-hard aluminum alloy tube has been widely used in daily life, especially in sports and cultural articles, such as making bats, tennis rackets, track and field struts, crossbars and columns, tourist tents, etc.
