There are many types of stainless steel and different properties. It has gradually formed several major categories in the development process. According to the structure of the organization, it is divided into four categories: martensitic stainless steel (including precipitation hardening stainless steel), ferritic stainless steel, austenitic stainless steel and austenitic plus ferrite duplex stainless steel; according to the main chemical components in steel Or some characteristic elements in steel are classified into chromium stainless steel, chrome-nickel stainless steel, chrome-nickel-molybdenum stainless steel, low-carbon stainless steel, high-molybdenum stainless steel, high-purity stainless steel, etc.; according to the performance characteristics and use classification of steel, it is divided into nitric acid resistant Stainless steel, sulfuric acid resistant stainless steel, pitting resistant stainless steel, stress corrosion resistant stainless steel, high strength stainless steel, etc.; classified according to the functional characteristics of steel, divided into low temperature stainless steel, non-magnetic stainless steel, free cutting stainless steel, super plastic stainless steel and so on. At present, the commonly used classification methods are classified according to the structural characteristics of steel and the chemical composition of steel and the combination of the two.
       Generally divided into martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, duplex stainless steel and precipitation hardening stainless steel, or divided into two categories of chromium stainless steel and nickel stainless steel. Seamless steel pipe price, Tianjin seamless steel pipe, oil casing, 12cr1mov, seamless steel pipe price, precision seamless steel pipe, 16mn seamless steel pipe, 15CrMo alloy pipe, q345b seamless pipe, q345B seamless steel pipe, Tianjin 27SiMn steel pipe, pipeline Pipe, 35crmo steel pipe, 12cr1mov alloy pipe, high pressure alloy pipe, Chongqing seamless steel pipe, bearing steel pipe, alloy pipe, Shandong steel pipe, precision seamless steel pipe, Tianjin seamless pipe, 15crmo steel pipe, Tianjin square pipe price, oil casing, high pressure Alloy tube
In layman's terms, stainless steel is a steel that is not easily rusted. In fact, some stainless steels have both rust and acid resistance (corrosion resistance). The stainless steel's rust and corrosion resistance is due to the formation of a chromium-rich oxide film (passivation film) on its surface. This rust and corrosion resistance are relative. The test shows that the corrosion resistance of steel in the weak medium such as atmosphere and water and the oxidizing medium such as nitric acid increases with the increase of the water content of chromium in the steel. When the chromium content reaches a certain percentage, the corrosion resistance of the steel occurs. Mutations, from rust to rust, from corrosion to corrosion.
       There are many methods for classifying stainless steel. According to the structure of the structure at room temperature, there are martensite, austenitic, ferrite and duplex stainless steel; according to the main chemical composition, can be basically divided into two systems: chromium stainless steel and chromium nickel stainless steel; There are nitric acid resistant stainless steel, sulfuric acid resistant stainless steel, seawater resistant stainless steel, etc. According to the type of corrosion resistance, it can be divided into pitting resistant stainless steel, stress corrosion resistant stainless steel, intergranular corrosion resistant stainless steel, etc. Magnetic stainless steel, free-cutting stainless steel, low-temperature stainless steel, high-strength stainless steel, etc. Due to its excellent corrosion resistance, formability, compatibility and toughness over a wide temperature range, stainless steel is widely used in heavy industry, light industry, household goods industry and architectural decoration industries. .
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