How to Clean Oxidized Aluminum

Aluminum is a versatile material used in many different items, from cooking pots and pans to bicycle rims. However, over time, aluminum often becomes oxidized, resulting in a dark gray layer on the surface. When you notice aluminum starting to oxidize, there are several methods you can use to clean it. First, wash and scrub the aluminum to remove any dirt from the surface. Then, clean the aluminum with acid-based cleaning products and scrub to eliminate the oxidation layer.

Wash the aluminum surface. Start the cleaning process for oxidized aluminum by rinsing it with water to remove any dust or grime. If you're cleaning a pot or pan, rinse it under a strong stream of water. For cleaning aluminum wheels or other items, use a wet cloth or spray nozzle to rinse thoroughly.

Wash aluminum with soap and water. If the aluminum appears clean after washing with water, proceed to clean it further with natural cleaning products. If there are still stains or buildup on the oxidized areas, wash the aluminum surface with hot water, soap, and a soft brush or abrasive pad.

Deep clean aluminum. To remove stubborn stains or food residue on aluminum, use hot water and a flat-edged tool to scrape off any remaining particles. If cleaning a pot, pour some water into the pot and heat it on the stove for about 5 minutes. Then, remove the pot from the heat, wait for the water to cool slightly, and use a spatula to scrape the stains away.

• For cleaning aluminum rims or other items, dip a cloth in hot water and place it on the stained surface to loosen the grime, then use a spatula to scrape clean.

Use vinegar. When cleaning an aluminum pot, fill the pot with water and add 2 tablespoons (about 30ml) of vinegar for every liter of water. Boil the water and vinegar mixture, and let it simmer for 15 minutes, then discard the liquid. Repeat this process several times to remove the oxidized layer.

• For smaller aluminum items, boil the vinegar-water mixture and remove the pot from the heat. Place the aluminum item in the pot, let it soak for 15 minutes, then rinse it clean.
• If working with a larger surface area, use a cloth soaked in vinegar to wipe the oxidized region. Scrub with a soft-bristled brush, then wipe away the vinegar and oxidation with a damp cloth.
• Avoid using abrasive materials like steel wool or sandpaper on the aluminum surface. While these can remove oxidation, they may scratch the surface, making it harder to clean the oxidation later.

Use lemon juice. When using lemon juice, follow the same steps as with vinegar. For small areas, rub a lemon slice on the oxidized spot and wipe it clean. Sprinkle some salt on the lemon for added abrasiveness if the oxidation is stubborn.

• You can buy pre-made lemon juice from the store for convenience, so you don't have to squeeze fresh lemons when needed.

Clean aluminum with cream of tartar. Use cream of tartar in a similar way as lemon juice or vinegar to remove the oxidation on aluminum. For larger surfaces, wet a cloth, add a bit of cream of tartar to it, and rub it onto the surface. Then, use a soft-bristled brush to scrub off the cream of tartar.

Boil something acidic. To clean an oxidized aluminum pot, simply boil something acidic, such as tomatoes, apple slices, lemon, or rhubarb. Place the pot on the stove, add the acidic food and enough water to submerge the oxidized area. Bring the water to a boil, then remove the pot from the heat and discard the contents.

• Since the oxidation layer will loosen, do not eat the food you just boiled.

Use aluminum cleaning products. Today, many cleaning products are available specifically for aluminum. After removing the oxidation using the above methods, wear gloves and use the aluminum cleaner according to the instructions on the packaging.

• Only use cleaners intended for aluminum. Many cleaners contain ammonia, sodium phosphate, and other chemicals that could damage the aluminum.

Use metal polish. In addition to polishing the surface, metal polish also helps clean aluminum and remove oxidation. Choose a metal polish that is safe for use on aluminum and carefully follow the instructions when treating the oxidized areas.

Apply wax after cleaning. Depending on the type of aluminum item or surface, you can apply a layer of motor wax after cleaning to prevent future oxidation. Only apply wax to surfaces like car rims, bike wheels, or outdoor aluminum items; do not apply it to kitchen aluminum utensils.

• When cleaning aluminum pots or pans, you should wash them thoroughly and use natural cleaning methods instead of industrial cleaners.
• Ensure that industrial cleaners are only used outdoors or in well-ventilated areas.

• Dish soap
• Flat scraper
• Vinegar
• Lemon juice
• Cream of tartar
• Clean cloth
• Aluminum cleaning products
• Aluminum polish
• Motor wax