Views: 0 Author: Site Editor Publish Time: 2024-01-13 Origin: Site
There are many kinds of stainless steel, according to the structure can be divided into ferrite stainless steel, austenitic stainless steel, martensitic stainless steel, duplex stainless steel and precipitation hardening stainless steel. According to the chemical composition, it can be divided into chromium-manganese nickel, chromium-nickel stainless steel and chromium stainless steel, corresponding to the American AISI standard 200, 300 and 400 series respectively.
Stainless steel classification
Classification | Texture | Chemical component | Representative steel grade | Basis (%) |
200# | Austenitic stainless steel | Chromium-manganese nickel stainless steel | 201 12Cr17Mn6Ni5N | 16.0-18.0Cr、5.5-7.5Mn、 3.5-5.5Ni |
300# | Chromium-nickel stainless steel | 304 06Cr19Ni10 | 18.0-20.0Cr、 8.0-11.0Ni | |
400# | Ferrite stainless steel | Chrome stainless steel | 430 10Cr17 | 16.0-18.0Cr |
Martensite stainless steel | 410 12Cr13 | 11.5-13.5Cr |
Main uses of stainless steel
Classification | Representative steel grade | Main property | Main application |
200# | 201 | Nickel content is less, adding manganese, nitrogen and copper, higher strength, poor corrosion resistance, low price | It is used for high strength, non-magnetic, wear resistance and corrosion resistance |
300# | 304 | Nickel content is not less than 8%, with good corrosion resistance, heat resistance, stamping, bending, welding and other processing properties, no hardening of heat treatment, no magnetic | The most widely used, household goods (1, 2 types of tableware, kitchen cabinets, indoor pipelines, hot water, boiler, bathtub), auto parts (windshield wiper, muffler, mold products), medical equipment, building materials, chemical, food industry, agriculture, ship parts |
400# | 430 | Free of nickel, magnetic, low thermal expansion rate, good processing performance, excellent resistance to oxide corrosion, corrosion resistance, cheap price | Heat-resistant appliances, burners, household appliances, 2 types of tableware, kitchen sink, external decorative materials, bolts, nuts, CD rods, screens |
410 | No nickel, poor corrosion resistance, good wear resistance | Blades, machine parts, petroleum refining units |
