By Frank Ross
Like any material exposed to our environment, stainless steel will need to be cleaned from time to time for aesthetic reasons and to preserve the corrosion resistance of the surface. Accumulated oils, dirt, dust and contaminates can reduce this alloy’s beauty and effectiveness.
Depending on the environment where the stainless steel is installed or used, contaminates will vary greatly as will their impact on appearance, corrosivity and difficulty of cleaning. Most contaminates are easily removed with hot, soapy water. More stubborn contaminates may require specific cleaners for effective removal. A mild non-scratching, abrasive powder, applied with a soft bristle brush, sponge or clean cloth normally remove any offending elements.
Naturally, the finish of the surface will have an impact on the method of cleaning as well as the method of application. Even the finest cleaning powders can scratch or burnish a mill-rolled finish. When cleaning polished finishes always rub or wipe in the direction of the polish lines in the metal’s surface. Where possible, always rinse surfaces thoroughly with clean water and wipe dry where streaking occurs.
Ordinary carbon steel brushes or steel wool should never be used when cleaning stainless steel surfaces. They may leave particles embedded on the surface which can lead to rusting. The simplest, safest and least costly method of cleaning is always the best choice; and remember, stainless steel surfaces perform well with frequent cleaning because there is no surface coating to wear off. For more stubborn oils, oxidized fingerprints and grease, the preferred solvent is one that does not contain chlorine, such as acetone, methyl alcohol or mineral spirits.
Household cleaners fall into two categories; detergent (non-abrasive) and abrasive. Both are effective for mild dirt, stain and soil deposits as well as routine removal of light oils such as fingerprints. Abrasive cleaners may produce faster results, but they may also introduce the possibility of scratching the surface. The degree of abrasiveness varies greatly with the many different brands, and they also vary widely with respect to the amount of chloride and acidity they contain. A neutral cleaner, low in chloride is preferred unless the user is certain the surface can be thoroughly rinsed after the cleaning process. A label that states “for stainless steel” is no guarantee the product is not abrasive, not acidic or low in chloride.
As with any cleaner being used for the first time, it is best to do a test spot in an area that is not prominent.
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