What reduces rust in stainless steel?
A 12-30% chromium content of the steel allows the formation of a rough, adherent, invisible, corrosion-resisting chromium oxide film on the steel surface. As long as the film is intact and not broken or contaminated, the metal remains protected and stain less. If damaged mechanically or chemically, this film is self-healing, providing that oxygen, even in very small amounts, is present. The corrosion resistance and other useful properties of the steel are enhanced by increased chromium content and the addition of other elements such as molybdenum, nickel and nitrogen. Enemies of Stainless Steel Common foodservice occurrances that can break down the chromium oxide film and allow corrosion to occur. 1. Mechanical abrasion caused by steel pads, wire brushes and scrapers. Use these with care. 2. Hard Water and Mineral Deposits may leave spots, and when heated leave deposits behind that if left to sit, will break down the passive layer and rust stainless steel. Other deposits from food prep
