In our daily life in many areas of stainless steel has a wide range of applications can actually be divided into two categories, distributed austenitic stainless steel and martensitic stainless steel, and in the austenitic stainless steel classification, based on the actual material performance and so on several aspects of the difference between a number of models can be available for consumers to choose to use. For example, the next I want to introduce you to the austenitic 304 stainless steel products, it has a stable austenitic organization.
A, austenitic stainless steel is 304
Austenitic stainless steel, refers to the stainless steel with austenitic organization at room temperature. Steel containing Cr about 18%, Ni8% ~ 10%, C about 0.1%, has a stable austenitic organization.
Stainless steel is divided into austenitic and martensitic.
The common stainless steel in austenite are SUS316?SUSU304?SUS303 and so on.
The common stainless steel in martensite are SUS440C?SUS410 and so on.
304 stainless steel is austenitic stainless steel.
304 stainless steel is a common material in stainless steel, density 7.93?g/cm3, the industry is also called 18/8 stainless steel. High temperature resistance of 800 degrees, with good processing performance, high toughness, widely used in industrial and furniture decoration industry and food medical industry.
304?is a general-purpose stainless steel, which is widely used in the production of equipment and machine parts requiring good comprehensive performance (corrosion resistance and molding). In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a grade of stainless steel produced in accordance with the American ASTM standard.
Second, the introduction of austenitic 304 stainless steel
Austenitic 304 stainless steel is a very common stainless steel, the industry is also called 18/8 stainless steel. On the basis of this stainless steel to increase the Cr, Ni content and add Mo, Cu, Si, Nb, Ti and other elements to develop a high Cr-Ni series of steel.
Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but the strength is low, it is not possible to make it strengthened by the phase transition, only through the cold working to strengthen, such as adding S, Ca, Se, Te and other elements, has a good machinability. Therefore, it is widely used in industrial and furniture decoration industry and food and medical industry.
Three, austenitic 304 stainless steel physical and chemical properties
Austenitic 304 stainless steel to change the different elements to change the different characteristics, add Mo to improve pitting corrosion and resistance to crevice corrosion, drop C or add Ti, Nb, to reduce the tendency to corrosion of intergranular corrosion, add Ni and Cr to improve the oxidation resistance and strength at high temperatures, and Ni to improve the anti-stress corrosion. Corrosion resistance. The addition of S and Se improves the cutting performance and surface accuracy of the components.
304 stainless steel and austenitic stainless steel, compared with high strength and resistance to intergranular corrosion and chloride stress corrosion has improved significantly. Duplex stainless steel has excellent pore corrosion resistance, is also a nickel-saving stainless steel. Has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; stamping, bending and other hot workability, no heat treatment hardening phenomenon (non-magnetic, use temperature -196 ℃ ~ 800 ℃). Corrosion resistance in the atmosphere, ? If it is an industrial atmosphere or heavily polluted areas, it needs to be cleaned in time to avoid corrosion.
304 stainless steel is equivalent to China's 0Cr18Ni9 stainless steel, corrosion resistance is better than ?430 stainless steel, corrosion resistance and high temperature resistance, processing performance is good, so it is widely used in the industrial and furniture decorative industry and the food and medical industry, for example, some of the high-grade stainless steel cutlery, bathroom kitchen utensils.
"304 stainless steel" this name but from the United States, 304 is a general-purpose stainless steel, it is widely used in the production of requirements for a good combination of performance (corrosion resistance and molding) of the equipment and machine parts. In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain more than 17% chromium, more than 8% nickel content. 304 stainless steel is in accordance with the U.S. ASTM standard production out of the stainless steel a grade
Above we first answered the question on the "austenitic stainless steel is 304," and from the Austenitic 304 stainless steel and the physical and chemical properties of the two boards to further carry out a detailed systematic and comprehensive information, we learned that the corrosion resistance and strength of austenitic 304 stainless steel is very good, while the special material content and proportion is also equipped with excellent performance, can be said to be an indispensable and important materials.