Pro's Corner

Accidents Happen! The Steps for Removing Acid Etchings on Stainless Steel

Stainless steel is sensitive to any acid. Even common acids such as orange juice are acidic enough to make permanent etches on some stainless steel.

Fumes from some strong acids can also make a slight etch.

The safest course to prevent acid etching is to protect any metal surface, especially stainless steel.

When accidents do occur, it is important to remove and neutralize the spill or splash as quickly as possible. Most alkaline cleaners will be fine for neutralizing the acid.

Factors That Determine The Severity of an Etching:

1) What is the pH of the acid?

2) What is the concentration level of the acid?

3) How long did it dwell on the surface?

4) What is the grade or quality of the stainless steel? (There are dozens of grades available. Some etch or stain pretty easily.)


Steps to Remove Acid Etching

Removing an acid etching is usually accomplished through buffing.

How much buffing and with what abrasive compound depends upon the severity of the etching. For light marks try a product called “Bar Keeper’s Friend.” This product is sold at restaurant supply stores and is used for cleaning stainless steel in restaurants.

1. Follow the label directions. Make sure to buff and polish to blend in the affected area. Work from the bottom up. A microfiber cloth works well but you can also use a cotton bar towel.

2. More severe damage will require stronger abrasives. Try various grades of automotive rubbing
compounds. You can also try 0000 or 000 steel wool.

3. Small areas can be done by hand.

4. Work with the grain of the stainless steel. Working across the grain can leave new scratches.

5. With some very fine abrasives,  use a variable speed drill with a buffing pad attachment.



Unfortunately, replacement of the stainless steel is frequently required, although usually only a decorative panel or one piece of the damaged product requires replacement, not the entire appliance.

The most important thing you can do is appropriately mask off stainless steel surfaces when cleaning with an acid in close proximity.


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