According to the organization structure at room temperature, there are martensitic, austenitic, ferritic, and duplex steel utensils;
According to the main chemical composition, it can basically be divided into two major systems: chromium stainless steel and chromium-nickel steel utensils;
According to the purpose, there are nitric acid-resistant steel utensils, sulfuric acid-resistant steel utensils, seawater resistant steel utensils, etc.,
According to the type of corrosion resistance, it can be divided into pitting corrosion-resistant steel utensils, stress corrosion-resistant steel utensils, intergranular corrosion-resistant steel utensils, etc.;
According to the functional characteristics, it can be divided into non-magnetic steel utensils, free-cutting steel utensils, low-temperature steel utensils, high-strength steel utensils and so on.
