Why do stainless steel screws still rust?
The stainless steel screws on the shore should be made of 316 stainless steel, which can resist the corrosion of sea water.The stainless steel screws with decorative function should be cleaned and scrubbed frequently so as not to affect the appearance.Consumers should go to reputable manufacturers to choose stainless steel screws. Some of the stainless steel screws on the market do not meet the requirements of the national standards and can not meet the requirements of anti rust.
Stainless steel screws will rust because the stainless steel protective film is damaged, stainless steel is oxidized, corrosion resistance ability to weaken, so stainless steel screws will rust. Therefore, in daily life, the surface of stainless steel screws should be cleaned to eliminate the external factors that cause corrosion.
Of course, stainless steel screw film damage is not only the above two reasons, there are many kinds of situations in daily life:1 stainless steel screws, long-term exposure to the soup, vegetables and other organic juice, a chemical reaction occurs into organic acids in water with oxygen under the condition of corrosion of stainless steel screws.2, stainless steel screws in the polluted air encountered condensate, pollution refers to contain a large amount of sulfide or carbon dioxide, water will form sulfuric acid, hydroxide, chemical corrosion of stainless steel screws.
Stainless steel screws will rust by contact with acid and alkali chemicals, or stainless steel screws in wet environment, the protective film on the surface of stainless steel screws, stainless steel screws will continue to damage, corrosion, corrosion and rust.
