Anodized kitchen utensils are those that are made of hardened aluminum by an elector chemical process called anodized, which is why they are also known, more properly, as anodized hard aluminum utensils. There are numerous brands and styles of anodized utensils and among its advantages stand out long lasting and excellent non-stick qualities even when the food burns.
The Anodizing Process
The aluminum anodizing process is a relatively simple elector chemical process. The aluminum base with which he makes the pan, pot or other utensil is immersed in a bath of sulfuric acid and then subjected to electric shocks. During the process, the ions that form the aluminum are exposed to oxygen and oxidized to form aluminum oxide (alumina). The acid bath is cooled to 0 ° C and passed through an electric current of 6000 A and 20 V. This causes the aluminum surface to rapidly anodize and become very hard in a matter of seconds. The hardness achieved, according to some sources, doubles the hardness of stainless steel .
The natural oxide layer of the base aluminum is increased up to 1000 times forming a very thick protective layer . Aluminum makes an anode in the electrical circuit and hence the process is known as anodization (can be applied to other metals although aluminum anodizing is the most common).
Durability And Resistance
The high durability and long life of the best hard anodized cookware are the main advantages of this material and one of the main reasons why people choose these utensils. The pots and pans manufactured by this process have a very hard surface resistant to scratches, deformation and corrosion. If used properly it may last a lifetime.
Uniform Distribution Of Heat
Anodised aluminum frying pans and pots offer a very uniform distribution of heat, which translates into a uniform cooking, undoubtedly a characteristic highly appreciated by those who love cooking.
In general, anodized kitchen utensils are considered to have good nonstick qualities although most kitchen experts do not consider them “truly” non-stick. Some frying pans and anodized pots receive a surface treatment to increase the non-stick qualities although the acceptance without this treatment is good and without this treatment the life span is usually longer, reason why is not very common.
Valid For Different Heat Sources
The surface of anodized aluminum is not considered toxic and is heat resistant to the melting point of aluminum (660.56 ºC). It can be used in any domestic heat source, both electric and gas, as they do not exceed these temperatures. It is also suitable for professional plates and burners in hotels, in fact, you can find the best hard anodized cookware that specially designed for restaurants and professional cuisine. However, they are not recommended for use in bonfires and open fire.
Care And Cleaning
The care needed to maintain the anodized aluminum pots and pans are quite simple. Manufacturers recommend immersing them in warm soapy water and using a soft sponge or scouring pad to remove leftover food. In case of burnt food or other difficult stains you can use metal scouring pads, the surface is hard enough to withstand, although you must do so only when strictly necessary. Although anodized aluminum skillets are not easily damaged, they may lose their gloss and finish if subjected to repeated abrasive treatments.
They can be dishwasher safe without any problem but some manufacturers do not recommend it for some specific products that have less resistant areas, for example, the plastic handles of an anodized may not withstand the high temperatures of the machine wash. It is always best to wash pots and pans by hand.