Description

The ***2 aluminum plate is an alloy made up of 2.5 percent magnesium and 0.*5 percent chromium. Its considered to have great workability and weldability. It has medium static and high fatigue strength. The corrosion resistance of this aluminum is very good, especially in marine environments. This metal has excellent thermal conductivity and low density, like with other aluminum alloys. To harden aluminum ***2, cold working can be used. Heat treatment cannot be used to obtain higher alloy strength.

The fatigue properties of this aluminum are excellent, with a limit of **5 MPa while in the H*2 temper and **3 MPa while in H*4 temper. Compared to the other aluminum alloys, the ***2 grade of aluminum has midway alloying content and strength. In slightly alkaline environments, ***2 alloys show a resistance level. Its resistance to marine environments is better than that of ***5 alloys, making it a more popular choice for marine applications.
Due to the protective surface oxide film this product has, it is able to resist corrosion. When damage is sustained, the rapid reaction that occurs between oxygen and aluminum repairs it. Even with the high reactivity, the base metal can witness a rapid corrosion if the film cant be repaired. For this reason, this type of alloy isnt recommended for use with reducing media. To help improve corrosion resistance, ***2 aluminum can be anodized, which thickens the protective film on the surface. Make note that this alloy is a reactive metal, which means that it can corrode faster when in electrical contact with other types of metals.

Cold forming is typically used for this type of alloy when it is in the annealed condition. At this time it is ductile. It is also readily machinable, weldable and can be heat treated.