Stainless Steel Finish Coming Off . Answered by jen1a 3 years ago. The biggest majority of our parts get passivated in a 20% nitric acid, 3% sodium dichromate solution. Stainless Steel Kitchen Sink Faucet with Soap Dispenser from www.junoshowers.com By the next morning, your. The 18/10 composition contains 18 percent chromium and 10 percent nickel. We do large amount of lasering & passivating different stainless steels.