One of the drawbacks of copper frying pans is that they require special care and maintenance to keep them looking their best. They must be regularly polished and treated with a special solution to prevent discolouration and tarnishing.
In addition, skillets and pans are available in very similar sizes (typically 8-inch, 10-inch, or 12-inch diameters) and materials (stainless steel, aluminum, multi-ply, and nonstick coating).
No, aluminum pans should be hand-washed only. Aluminum cannot withstand the high heat of the dishwasher or harsh dishwashing chemicals, which can tarnish or stain the surface.