303 stainless steel belt, easy car stainless steel belt, 303 stainless steel belt. 303 is a free-cutting stainless steel containing sulfur and selenium respectively, and is used in occasions where easy cutti ng and high surface finish are mainly required.
Brief introduction of 303 stainless steel strip
303 stainless steel bar: by adding a small amount of sulfur and phosphorus, it is easier to cut than 304, and its other properties are similar to 304. Applications: Petroleum, electronics, chemical industry, medicine, light textile, food, machinery, construction, nuclear power, aerospace, military and other industries! 303 is a free-cutting stainless steel containing sulfur and selenium respectively, which is mainly used for easy cutting and surface finish High occasions. 303 stainless steel improves cutting performance and high temperature bonding performance. Best for automatic lathes. 303 stainless steel is an austenitic free-cutting stainless acid-resistant steel. In order to improve the performance of the steel, no more than 0.60% of molybdenum can be added to the steel, which can resist ablation, and the product has good machinability and burning resistance. Corrosion resistance. Mechanical properties of 303 stainless steel After annealing and stress relief, the tensile strength is 515MPa, the yield is 205MPa, and the elongation is 40%. The standard hardness of stainless steel 303 is HRB 90-100, HRC 20-25, Note: HRB100 = HRC20.
The characteristics of 303 stainless steel strip
All metals react with oxygen in the atmosphere to form an oxide film on the surface. Unfortunately, the iron oxide that forms on plain carbon steel continues to oxidize, allowing the rust to grow and eventually form holes. Carbon steel surfaces can be secured with paint or with oxidation-resistant metals such as zinc, nickel and chromium, but, as is known, this protection is only a thin film. If the protective layer is breached, the underlying steel begins to corrode. The corrosion resistance of stainless steel depends on chromium, but because of the chromium is one part of the steel, so the protection method is not the same.
When the amount of chromium added reaches 10.5%, the atmospheric corrosion resistance of steel increases significantly, but when the chromium content is higher, although the corrosion resistance can still be improved, it is not obvious. The reason is that alloying steel with chromium changes the type of surface oxide to a surface oxide similar to that formed on pure chromium metal. This tightly adhered chromium-rich oxide protects the surface from further oxidation. This kind of oxide layer is extremely thin, and the natural luster of the steel surface can be seen through it, making the stainless steel have a unique surface.
Moreover, if the surface is damaged, the exposed steel surface will react with the atmosphere to repair itself, re-form this "passive film" and continue to play a protective role. Therefore, all stainless steels have a common characteristic, that is, the chromium content is above 10.5%.
The use of 303 stainless steel belt
Most of the use requirements are to maintain the original appearance of the building for a long time. When determining the type of stainless steel to be selected, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere, and the cleaning system to be adopted. Increasingly, however, other applications simply seek structural integrity or impermeability. For example, roofs and side walls of industrial buildings. In these applications, the owner's cost of construction may be more important than aesthetics, and the surface is not very clean. 430 stainless steel works reasonably well in dry indoor environments. However, to maintain its appearance outdoors in both the country and the city, frequent washing is required. In heavily polluted industrial areas and coastal areas, the surface will be very dirty and even rusted. However, to obtain the aesthetic effect in the outdoor environment, nickel-containing stainless steel is required. Therefore, 304 stainless steel is widely used in curtain walls, side walls, roofs and other construction purposes, but in severely corrosive industries or marine atmospheres, it is best to use 316 stainless steel. The advantages of using stainless steel in structural applications are now fully realized. There are several design criteria that include 304 and 316 stainless steel. Because "duplex" stainless steel 2205 has integrated good atmospheric corrosion resistance with high tensile strength and elastic limit strength, this steel is also included in the European standards.
In fact, stainless steel is manufactured in all standard metal shapes and sizes, and there are many special shapes. The most commonly used products are made of sheet and strip steel, and special products are also produced from medium and thick plates, for example, the production of hot-rolled structural steel and extruded structural steel. There are also round, oval, square, rectangular and hexagonal welded or seamless steel pipes and other forms of products, including profiles, bars, wires and castings. As will be discussed later, various commercial finishes have been developed to meet the aesthetic requirements of architects. For example, the surface can be highly reflective or matte; it can be glossy, polished, or embossed; it can be pigmented, colored, plated, or etched with a pattern on the surface of stainless steel to meet the designer's desire for appearance. various requirements. Keeping the surface is easy. Dust can be removed with just occasional rinsing. Due to the good corrosion resistance, graffiti contamination or similar other surface contamination on the surface can also be easily removed.
Supplier of 303 stainless steel strip
Shangyi International Trade Co., Ltd. is a company specializing in the production of stainless steel products. The 303 stainless steel strip produced by our company has excellent performance and is well recognized by the market. If you have this demand, please contact us.
