Putting aluminum items in the dishwasher is generally not recommended due to several reasons:
Discoloration and Stains: Aluminum can react with the detergent and other chemicals in the dishwasher, leading to discoloration and staining of the metal. This can result in unsightly marks on your aluminum items.
Deterioration: The high heat and harsh chemicals used in the dishwasher can cause the protective layer of oxide on the surface of the aluminum to break down. This can make the aluminum more susceptible to corrosion and may lead to pitting or other damage over time.
Bending and Warping: Aluminum is a relatively soft metal, and the high-pressure water jets in the dishwasher can cause it to bend, warp, or become misshapen.
Damage to Other Items: The interaction between aluminum and certain metals, such as stainless steel, can lead to galvanic corrosion. This corrosion can affect not only the aluminum item but also other materials in the dishwasher, potentially damaging other utensils or cookware.
Non-Dishwasher Safe: Many aluminum items are labeled as "not dishwasher safe" by their manufacturers. This warning is given to prevent potential damage and to ensure the longevity of the product.
To care for your aluminum items properly, it is best to wash them by hand using mild dish soap and a soft sponge. Avoid using abrasive cleaners or scouring pads, as they can scratch the surface. Additionally, make sure to dry the items immediately after washing to prevent water spots or potential corrosion.
Always check the manufacturer's instructions and recommendations for the care and cleaning of your aluminum items to ensure they maintain their appearance and functionality for a long time.