Weathering steel and atmospheric corrosion resistant steel are a series of low alloy steels between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel and a small amount of corrosion-resistant elements such as copper and nickel. It has the resistance and plasticity of high-quality steel. It is characterized by extension, forming, welding, wear resistance, high temperature resistance and fatigue resistance. Its weather resistance is 2 to 8 times higher than that of ordinary carbon steel, and its coating performance is 1.5 to 10 times higher than that of ordinary carbon steel. At the same time, it has the characteristics of rust prevention, corrosion prevention, prolonging service life, thinning and reducing consumption, saving work and energy. Weathering steel is mainly used for steel structures exposed to the atmosphere for a long time, such as railways, vehicles, bridges, towers, photovoltaic systems and high-speed projects. It is used to manufacture structural parts, such as containers, railway vehicles, oil cranes, seaport buildings, oil production platforms and containers containing hydrogen sulfide corrosion means in chemical petroleum equipment.
First of all, stainless steel and weathering steel have different names, contents and densities. In addition, in our real life, the use of stainless steel is far greater than that of weathering steel, which has not been widely recognized.
However, the weather resistance of steel is inevitable because it is used for large-scale infrastructure and urban construction. (For example, weathering steel is mainly used for railways, vehicles, bridges, towers, photovoltaic, high-speed engineering and other steel structures exposed to the atmosphere for a long time). Today, sculpture, garden, park sculpture and other popular sculptures in the sculpture industry show a beautiful and beautiful side.
Stainless steel (stainless steel) is the abbreviation of weathering steel. It is resistant to air, steam, water and other weak corrosive media or stainless steel. It is called stainless steel. The grade of steel etched into acid by chemical resistant medium (acid, alkali, salt, etc.) is called weathering steel.
Due to the difference in chemical composition between them, their corrosion resistance is different. Ordinary stainless steel is usually not resistant to chemical corrosion, while acid resistant steel usually rust. The term "stainless steel" refers not only to a single type of stainless steel, but also to more than one hundred industrial stainless steels, each developed for its specific application. The key to success is to first clarify the purpose and then determine the correct steel grade. In general, only six types of steel are relevant to the application of building structures. All contain 17-22% chromium, and the best steel also contains nickel. The addition of molybdenum further improves the atmospheric corrosivity, especially the corrosion resistance to chlorine containing atmosphere.
Stainless steel refers to steel resistant to weak corrosive media, such as air, steam, water and chemical etching media, such as acid, alkali, salt, etc., also known as acid resistant stainless steel. In practical applications, steel resistant to weak corrosion medium is usually called stainless steel, while steel resistant to chemical medium is called acid resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to corrosion by chemical means, while the latter usually has rust. The corrosion resistance of stainless steel depends on the alloy elements contained in the steel.
However, the stainless steel sculpture industry is the most common and productive. In the sculpture industry, forging can only be done with stainless steel, because stainless steel contains components (17% to 22% chromium, and the best steel also contains nickel), so forging is a more perfect stainless steel material. Thickness is a headache for manual forging. It is too thick to move. The thickness can only be (0.1 cm - 0.25 cm). Therefore, some sculptures must contain keels.
