The color of stainless steel after passivation is usually light gray or dark gray, depending on the method and process of passivation treatment. Passivation is a surface treatment technique that enhances corrosion resistance by forming an oxide film on the surface of stainless steel, while also changing its appearance color.
In general, the light gray stainless steel passivation layer is thinner, while the dark gray stainless steel passivation layer is thicker. Passivation treatment can improve the corrosion resistance and wear resistance of stainless steel, but also make its appearance more beautiful and uniform. Therefore, the color of stainless steel after passivation treatment is determined by the passivation process and treatment method.
The passivation color of stainless steel is usually dark gray to black, depending on the passivation process and treatment method used. In general, the use of different passivators and treatment times will produce different color effects. For example, the use of acidic passivators and a long treatment may produce a darker black, while the use of alkaline passivators and a short treatment may produce a lighter gray.
These colors not only have a beautiful appearance, but also can improve the corrosion resistance and wear resistance of stainless steel materials, so they are widely used in the industrial field.
After passivation, stainless steel usually shows a light yellow or light brown color. This color is caused by the oxide film formed in the passivation process, which can not only enhance the corrosion resistance of stainless steel, but also play a certain aesthetic role. However, it should be noted that the color of stainless steel after passivation depends on the passivation process and conditions, and different stainless steel materials will also affect the performance of the color, so it is necessary to make the appropriate choice according to the specific situation in practical applications.
1. Natural passivation, that is, does not change the size, size, appearance of the workpiece, what color is before passivation, and what color is after passivation.
2. Silver-white passivation, that is, pickling passivation, passivation, the workpiece into a unified silver-white. If there is a requirement for appearance, it is used, and the general color passivation is the most used