Areas of application stainless steels
Stainless steel appeared exactly 100 years ago in 1913. During this time, along with a rise in the standard it has reached a leading position worldwide. Over the last decade, consumption rose by 4−6%. Now there is such a universal material that could replace the stainless steel. Among the varieties of stainless steels are austenitic grades have a very broad scope, ranging from electricity and heavy engineering to consumer sector and medicine. In Europe, austenitic steel is used in the following areas.
1. Industrial chemistry
Almost the entire chemical industry is based on austenitic stainless steels. Uhthe reactors and tubes, small vessels and huge capacity, and other equipment. As a rule, require high-alloy brand, which contain at least 6% molybdenum. The minimum acceptable mark is considered 1.4404. The choice of steel grade depends on the tasks that need to be addressed.
2. Food industry
To date, stainless steel, glass, and certain plastics are widely used in the food industry. It is virtually uncontested in this industry. They are convenient for production, transportation and storage of food products. They satisfy the most stringent requirements of hygiene and sanitation. Today tightened restrictions on the solubility of heavy metals in materials used in the food industry, from raw materials to delivery to the consumer. According to the European recommendations, the amount of wash off of chromium and Nickel from the table of a priori should not exceed 2 mg/DM2. In austenitic steels, this figure is even less than 0.02 mg/DM2 or about 1% of the permissible values. Typically in the food industry used stainless steel 1.4401 (AISI 316) and 1.4301 (AISI 304), and in extremely rare cases can be used high-alloy alloys. Requires a smooth metal surface without irregularities, scratches and fractures. Sufficient finish is 2 In, but sometimes it is electrolytic polishing. It should be noted that the roughness on the surface should not exceed 0.6 micron.
3. The pulp and paper industry
Of stainless steel produced much of the equipment in papermaking plants, as well as all the equipment the pulp mills. Grade 1.4401 (AISI 316) is the minimum. In modern enterprises, which provides circulation along the closed circulating cycles, this brand is the need to use steel with a molybdenum content of from 3 to 6%. Brand can only select a specialist. About 3000−5000 tons of stainless steel goes to the equipment of a modern plant, the main part is the tube.
Most of the energy is produced when burning fossil fuels such as coal, oil, gas, and uranium in atomic reactors. Stainless steel is used in all cases, whether at sea or on land. In the nuclear industry has always used high-alloyed steel, because in this industry, safety requirements are extremely high.
5. Environmental protection
Need to say at once that the work in this area has just begun, and there are many unsolved problems. Today, the company has concluded that it is necessary to solve the problems in this grown through legislation and to reduce the harmful effects on nature. To date, all heavy industry, factories, power plants and workshops either closed, or moderniziriruyutsya so that hazardous waste does not exceed the aisles of the factory, and walked through the closed circuit cleaning. Also, the companies cleared and gas. Dust should be collected and sent back for reprocessing. When constructing new plants taking into account all requirements for the protection of the environment. Today I go to make large investments in stainless steel, since environmental protection is in the first place. To do this, use a large number of different brands, it and ordinary 1.4301 (AISI 304) and special high-alloy steel grades.
The last time there was a great need for transporting all kinds of goods, materials and liquids. To reduce the cost of transportation and to improve their security is a constant search for new solutions. In recent times, there are special containers in stainless steel. To reduce the cost of transportation, constructed a multi-purpose container made of stainless steel. Thus, it is possible now in the same capacity at first to transfer milk, and then the turpentine. Only need before downloading thoroughly washed her inner walls, the benefit on stainless steel do not delay. Usually for this purpose used alloy 1.4401 (AISI 316). For stainless steel transport engineering has become a large market. For the manufacture of stainless steel tubes for automotive industry are required ferritic or austenitic steels. Just imagine what the year produced millions of cars and each should be not less than 400 kg of stainless steel.
Of stainless steel make spoons, forks, pots, pans, etc., the insides of washing machines, dishwashers and vehicles. Stainless steel speaks to the high standard of living, because the higher the income, the more home items in stainless steel. France, Germany and Italy — manufacturers of quality home appliances based on stainless steel.
8. Construction and architecture
It should be noted that stainless steel has been successfully used by architects and designers. It can be combined with stone, wood, plastic or glass with any materials. It can be used for facades and street furniture, it looks stylish and elegant. It is an ideal roofing material.
To buy, price
In stock, LLC «" in the presence of a wide range of high-quality metal standard and custom sizes. Supply products of stainless steel of various brands in retail and wholesale. All the party goods have the quality certificate on conformity to requirements of standards and technical conditions. The certificate is marked manufacturer, brand alloy, the melting number, chemical composition and mechanical properties. Implementation of orders in the shortest possible time. Wholesale buyers are offered preferential discounts.
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