Strip, sheet made of 36NHTJU alloy.
Strip, sheet made of special precision steel 36NHTJU are widely used in modern mechanical engineering, accurate instrument engineering, watch industry, medicine. They are also utilized in making ultrasonic equipment, watch springs, resonators, electromechanical filters, membranes and similar details, from which are required the elastic properties that do not depend on temperature. Equipment made of steel 36NHTJU can operate at a temperature up to 250 °C. This steel perfectly fits for manufacture of domestic machines, utensils.
Alloy is smelted in electric open furnaces according to GOST 5632−72 from three main metals: iron, chrome, and nickel. There are also residual elements of titanium and aluminium. A content of Ni composes around 35 — 37%, Ti — 2,7 — 3,2%, Cr — 11,5 — 13%, Al — 0,9 — 1,2%. The rest compose iron and masteralloys of mangan, silicon. Furthermore, an alloy has residual elements such as silicon (about 1%), mangan (about 1%), selenium (up to 0,03%), phosphorus (up to 0,025%), carbon (0,1%), barium (up to 0,1%). Forging of semi-fabricates starts at temperature 1150−1180°С and finishes at 850 °C. They are welded with any types of welding. At arc or hand welding there are used consumable electrodes.
Roll stock of grade 36NHTJU is made according to GOST 24 982−81. Such a standard normalizes a hot-worked and cold-worked roll-stock run-off from heat-resistant alloys on nickel and iron-nickel basis. After roll-stock, a sheet should be heat-strengthened at a temperature 1060 — 1100 °C. A hardening operation is conducted in air, in water or in showering installation.
Percentage composition of alloy
Elinvar strip, sheet supplier
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Products made of elastic alloys are used in the capacity of materials that have a high resistance to mechanical loads. From a sheet are manufactured details for modern mechanical engineering needs, accurate instrument engineering, watch industry, medicine. It is also utilized in making ultrasonic equipment, watch springs, resonators, electromechanical filters, membranes and similar details, from which are required the elastic properties that do not depend on temperature. Thanks to a high content of chrome and nickel, such products can work in acid, aggressive environment at heating to 250ºC without losing a lasting-quality. A roll-stock of Elinvar can have a thickness less than 1 mm when it is necessary, for example in accurate instrument engineering. Elinvar is the most popular alloy among analogous alloys because of fairly low cost.
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