This alloy contains 18-20 chromium and 8-10.5 nickel, which gives it excellent corrosion resistance. So, 18/8 contains 18 chromium and 8 nickel. The second number indicates the percentage composition of nickel. In each case, the first number indicates the percentage composition of chromium. The most common grades of stainless steel 304 are referred to as 18/8 and 18/10. Indicatively, SS 304 can withstand temperatures to up to 925 degrees Celsius while maintaining enough strength and the same corrosion resistance properties. Chemical composition of stainless steel 304 One of the most important properties of stainless steel 304 grade is its chemical composition. The chromium content of 304 stainless steel varies between 17.5 and 19.5. It will be no surprise to learn that it is the most popular stainless steel available today along with the superior grade, SS AISI 316. However, because chloride is usually only found in controlled environments and relatively low concentrations, SS 304 remains suitable for a very wide range of applications. These environments can cause corrosion cracking and general damage to the protective layers of the steel. The Achilles heel of SS AISI 304 is chloride environments and high temperatures (above 60 degrees Celsius). These include the aesthetically pleasing appearance, easiness in cleaning, relatively high-strength to weight ratio and high availability in many different forms. There are also additional reasons why 304 is used in the aforementioned sectors. Industrial components such as screws, nuts and bolts It is austenitic, resistant to corrosive acids, and due to its lower carbon composition, it is perfect for high-temperature situations and when seeking to.The alloy can also operate successfully in caustic solutions free of chlorides or fluorides at moderate temperatures.Īlloy 304/304H does not perform well in more highly reducing environments such as those containing chlorides and sulfuric acid. The nickel present in the alloy provides resistance to moderately reducing solutions such as pure phosphoric acid, whatever the concentration, in cold solutions and up to 10% diluted hot solutions. The high chromium content of the alloy provides resistance to oxidizing solutions such as nitric acid up to 55% weight and up to 176☏ (80☌).Īlloy 304 also resists moderately aggressive organic acids such as acetic. 409L (1.4512) stainless steel, the main component of 409L(1.4512) is Cr, extremely low C, N control and Ti addition, making 409L(1.4512) material resistant to. The austenitic stainless steels are also considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes.Īlloy 304 has good resistance to atmospheric corrosion, foods and beverages and to many organic and inorganic chemicals in moderately oxidizing to moderately reducing environments. Ideal for a wide variety of home and commercial applications, Alloy 304 exhibits excellent corrosion resistance and has a high ease of fabrication, outstanding formability. However, the chemical composition of 316, which is made up of 16 chromium, 10 nickel, and 2 molybdenum, is the main difference between 304 and 316 stainless steel. To the naked eye, the two metals look the same. Alloy 304 is the most versatile and widely used alloy in the stainless steel family. Chemical Composition 316 contains many similar chemical and mechanical properties as 304 stainless steel. It is the standard “18/8 stainless” that is commonly found in pans and cooking tools. It contains between 16 and 24 percent chromium and up to 35 percent nickelas well as small amounts of carbon and manganese. Alloy 304 a T-300 series stainless steel austenitic, which has a minimum of 18% chromium and 8% nickel.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |