Stainless steel corrosion

Corrosion

Corrosion of stainless metal alloys - is the process of their destruction due to chemical or electrochemical interaction with the external environment. Corrosion of stainless steels in certain environments can occur uniformly or in the form of pitting corrosion, crevice corrosion, integral corrosion or stress corrosion cracking.

Stainless steel is naturally resistant to corrosion, but it is not rust-proof. Although it is less susceptible to rust than regular steel, exposure to harmful chemicals, brine, grease, moisture, or heat over a long period of time can cause corrosion. The likelihood of corrosion depends on the chromium content of the stainless steel, with higher chromium content reducing the risk of rust.

Atmospheric corrosion of stainless steel

Atmospheric corrosion of stainless steel is the process of destruction of stainless metal due to its interaction with air, water and other substances in the ground atmosphere. A feature of atmospheric corrosion is the possibility of free access of oxygen to the corroding surface. This is due to the small thickness of the oxide film and convection of electrolyte mixing.
Bimetallic - Galvanic - Contact corrosion of stainless steel

Bimetallic - galvanic - contact corrosion can occur when two dissimilar metals are in "electrical" contact and are connected by a conductive liquid. The resulting "cell" can lead to corrosion of one of the paired metals. Depending on the circumstances, this can be a problem when stainless steel is in contact with other metals.
Intergranular corrosion of stainless steel

Intergranular corrosion of stainless steel, unlike many other forms of stainless steel corrosion, occurs at the microscopic level, affecting the structure of the metal. Signs of damage do not always appear on the surface of the metal. The occurrence of intergranular corrosion requires certain circumstances, and in some cases the damage caused by it can be avoided.
Why does a stainless steel sidewalk, parking / anti-parking bollard rust

Parking / anti-parking or sidewalk bollard (street bollard) made of stainless steel is a metal product made of stainless metal, related to the type of parking equipment. Purpose: for fencing territories, delimiting automobile / transport and pedestrian zones, serves to organize parking or prevents parking in prohibited areas. Can be used both outside and inside buildings and in underground parking lots to separate individual
...
Why Does Stainless Steel Rust

The appearance of rust on stainless steel products baffles many people. If this material is called "stainless steel", then why can stainless steel oxidize, darken, blacken and rust? In fact, if the production technology is violated or the operating rules are violated, rust can appear even on high-quality stainless steel.