The maximum carbon content of 316 stainless steel pipe is 0.03, which can be used in applications where annealing after welding cannot be performed and maximum corrosion resistance is required. 316 and 317 stainless steel (see below for the properties of 317 stainless steel) are molybdenum-containing stainless steels. The overall performance of this steel is better than that of 310 and 304 stainless steel. Under high temperature conditions, when the concentration of sulfuric acid is lower than 15% and higher than 85%, 316 stainless steel has a wide range of uses. 316 stainless steel also has good performance against chloride erosion, so it is usually used in marine environments. 316 stainless steel, also known as 00Cr17Ni14Mo2 corrosion resistance: The corrosion resistance is better than 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper. And 316 stainless steel is also resistant to erosion by marine and aggressive industrial atmospheres. Heat resistance In intermittent use below 1600 degrees and continuous use below 1700 degrees, 316 stainless steel has good oxidation resistance. In the range of 800-1575 degrees, it is best not to use 316 stainless steel continuously, but when 316 stainless steel is used...
Corrosion resistance of 304 stainless steel pipe: Average corrosion: 304 stainless steel pipe because of chromium content (22%), molybdenum (3%) and nitrogen content (0.18%), the corrosion resistance of 2205 is better than 316L and 317L in most environments. Local corrosion resistance of 316 stainless steel: The content of chromium, molybdenum and nitrogen in 304 stainless steel makes it have strong resistance to point erosion and crevice erosion in oxidizing and acidic solutions. Stress erosion resistance: The dual-phase microstructure of 304 stainless steel tube helps to improve the stress erosion cracking resistance of stainless steel. In the presence of certain temperature, stress, oxygen and chloride, austenitic stainless steel will undergo chloride stress intrusion. Because these conditions are not easy to control, the use of 304L, 316L and 317L is limited in this regard. Anti-erosion fatigue: The high strength and corrosion resistance of 304 stainless steel make it have a high resistance to erosion and fatigue. Processing equipment is susceptible to aggressive environments and loading cycles, and the properties of 2205 are ideal for such applications. Annealing atmosphere. 316 welded pipes generally use pure hydrogen as the annealing atmosphere, and the purity of the atmosphere is preferably more than 99.99%. If another...
According to the concept, steel has the following material classifications. Production method, chemical composition, there are different material classifications. 1 The concept of steel: Steel is a steel ingot, billet, or steel that is press-worked into the various shapes, sizes, and properties I need. With a wide range of applications and varieties, steel is an essential and important material for national construction and the realization of the four modernizations. According to the different section shapes, steel is generally divided into four categories: profiles, plates, pipes and metal products. Section steel, small section steel, steel cold-formed section steel, high-quality section steel, wire rod, medium and thick steel plate, thin steel plate, electrical silicon steel sheet, strip steel, seamless steel pipe steel, welded steel pipe, metal products and other varieties. 2 Production methods of steel Plastic deformation of the processed steel (bill, ingot, etc.). According to the processing temperature of the steel, it can be divided into two types: cold working and hot working. The main processing methods of steel are: most of the processing of steel is processed by pressure. A press working method with increased length, rolling: passing a steel metal blank through a gap (various shapes) of a pair...
The use of stainless steel plate is very extensive. With the use of stainless steel plate materials in construction and other industries, stainless steel plate smelting enterprises have begun to appear in many places. So how to smelt stainless steel plate, here are the non-oxidation method, oxidation method and return oxygen blowing method; three methods to smelt stainless steel plate. Nowadays, most of the methods we use are the return oxygen blowing method. This method uses scrap steel for direct smelting, which is not only low-cost but also highly efficient. At present, some developed countries in foreign countries also use returned materials in smelting stainless steel. Oxygen blowing method; the stainless steel used in this method occupies a large amount of raw materials, so if there is no stainless steel scrap resource, it will become a meal without rice. In response to this problem, some people have developed a one-step method for smelting stainless steel plates and pipes. This one-step method is one-step smelting of stainless steel in an electric furnace. Because the one-step method has very strict requirements on raw materials, the raw materials and energy media in production are consumed at high costs. high, and the smelting cycle...
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