Waterproof material is stain-resistant and ideal for use in medical settings, kitchens, and gyms where there is a risk of contamination or infection spread. As concerns about germ transmission rise during outbreaks like coronavirus, the need for clean surfaces increases. Passivation is a metal finishing process that uses nitric acid or citric acid to remove free iron from stainless steel surfaces. This creates a protective oxide layer that prevents corrosion and makes passivated stainless steel resistant to rust. Industry standards define passivation as the process of making stainless steel corrosion-resistant through controlled oxidation. There are three main types of passivation based on the chemical used: nitric acid, nitric acid with sodium dichromate, or citric acid.

1. Why is Waterproof helpful
material?

2. The material is waterproof to cleaning agents and stain-
resistant. And making it ideal for use in medical settings,
kitchens, and gyms. Or an environment with a risk of
contamination or the spread of infection.

3. As the desire to eradicate germs grows with outbreaks.
Such as the coronavirus, anxiety rises, and so does the
need for clean surfaces.

4. What is the Passiveness of
stainless steel?

5. Passivation is a widely used metal finishing process to
prevent corrosion. However, the stainless steel
passivation process uses nitric acid or citric acid to
remove free iron from the surface.

6. Chemical treatments especially provide a
protective oxide layer or passivation film that is
less likely to react with air and cause corrosion
chemically. Even Passivated stainless steel is rust-
resistant.
Passivation prevents rust in stainless steel.
Passivated stainless steel resists rust.

7. What does passivated
stainless steel mean?

8. For manufacturers, the industry standards
ASTM A967 and AMS 2700 represent the most
widely used standards for passivating
stainless steel. That’s why according to ASTM
A967, the definition of passivation is:

9. Type of Passiveness of
stainless steel

10. Today, the industry standard for surface passivation
offers three types of passivation. Each class is based on
the chemical used for passivation. There are three types
of passivation:
nitric acid
Nitric acid containing sodium dichromate
citric acid.