In layman's terms, stainless steel is not easy to rust the steel, in fact, part of the stainless steel, both stainless steel, and acid resistance (corrosion resistance).
Stainless steel corrosion resistance and corrosion resistance is due to its surface chromium-rich oxide film (passive film) formation. This rust resistance and corrosion resistance are relative. The results show that the corrosion resistance of the steel increases with the increase of Cr content in the weak medium such as air, water and nitric acid. When the Cr content reaches a certain percentage, the corrosion resistance of the steel occurs Mutation, that is easy to rust from easy to rust, from corrosion to corrosion-resistant.
Stainless steel classification methods are many. According to the organizational structure at room temperature classification, martensitic, austenitic, ferritic and duplex stainless steel; according to the main chemical composition classification, basically can be divided into chromium stainless steel and chromium nickel stainless steel two systems; Resistant stainless steel, resistant to sulfuric acid stainless steel, seawater resistant stainless steel, etc., according to the type of corrosion resistance can be divided into pitting corrosion stainless steel, stainless steel, stress corrosion resistance, corrosion resistance of intergranular stainless steel; classification by functional characteristics can be divided into non- Magnetic stainless steel, free cutting stainless steel, low temperature stainless steel, high strength stainless steel and so on. As the stainless steel has excellent corrosion resistance, molding, compatibility and in a wide temperature range of strength and toughness characteristics of the series, so in the heavy industry, light industry, household products industry and building decoration industries have access to a wide range of applications .
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