[China Aluminum Network] characteristics of aluminum copper alloy
2 series aluminum copper alloy Aluminum alloy with copper as the main alloying element, which includes Al-Cu-Mg alloy, Al-Cu-Mg-Fe-Ni alloy and Al-Cu-Mn alloy, etc. High strength, commonly referred to as hard-aluminum alloys, has good heat resistance and processability, but corrosion resistance is not as good as most other aluminum alloys. Under certain conditions, intergranular corrosion occurs, so the plates often need to be coated with a layer of pure Aluminum or 6 series aluminum alloy, improve corrosion resistance. Among them, Al-Cu-Mg-Fe-Ni alloy has a very complex chemical composition and phase composition, it has high strength at a temperature, and has a good process performance, mainly used for heat-resistant parts working below 150-250 degrees Celsius. The room temperature strength of Al-Cu-Mn alloy is lower than that of Al-Cu-Mg alloys 2A12 and 2A14, but the strength is higher than that of the two at 225-250 degrees Celsius or higher, and the process performance of the alloy is good and it is easy to weld. Mainly used in heat-resistant weldable structural parts and forgings.
The use of aluminum copper alloy
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