NP-2, Nickel 200, Nickel 201
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The marking of NP-2 laid not only the type of the alloy itself, but also its relation to the nickel class — nickel semi-finished. This material is the most common type of semi-finished products based on nickel. The category expressed by the figure at the end of the labeling may vary depending on the quantitative ratio of the various impurities in the main feedstock. Currently, these materials are actively used in many areas of the production complex due to their precisely balanced chemical composition and the presence of a number of important performance characteristics.
The percentage composition of NP2, GOST 492−2006
|Ni||C, Fe||Mg||Cu||Si||Mn||Bi||Zn||S||Si||As, Cd, P, Pb, Sn|
|99.5||To 0.1||≤0,1||≤0,1||≤0.15||≤0,05||≤0,002||≤0.007||≤0.005||≤0,015||To 0,002|
Back in the eighteenth century, some miners paid attention to an empty rock from which it was impossible to melt metal, calling it the name of the fairy gnome of Nick, a mischievous and a minor pest. But later it turned out that the cause of this fiasco was not the uselessness of the material itself, but the lack of effective mechanisms for extracting nickel from the rock. Still later, nevertheless, it was possible to separate pure metal from natural nuggets, and at the present time, complex industrial technologies allowed not only to obtain nickel in pure form, but also to melt a lot of alloys necessary for the national economy on its basis. However, the original mischievous name behind the material has survived to this day.
Modern industry today can not be imagined without products made of nickel and nickel alloys. Nickel grade NP2 Belongs to the class of high-purity nickel alloys with a content of not less than 99.5% of chemically pure nickel. Such raw materials, due to a minimum of impurities, have a large range of useful properties: high plasticity, corrosion resistance to most concentrated acids, alkalis and aggressive industrial environments, as well as high electrical resistance. Nickel forms, when in contact with air, a dense surface protective film that protects the material from oxidative damage. And the minimum content of impurities contributes to the increase of mechanical and physical parameters and increases the heat resistance of such raw materials. Most often, equipment from this type of material is used by the chemical industry. The manufacture and transportation of caustic chemicals such as caustic soda or liquid chlorine does not do without such a strong and reliable raw material.
The production process of obtaining an alloy of this type is quite labor-intensive and requires the use of specialized equipment. Sometimes this raw material can be obtained by remelting, using waste that has remained after the isolation of pure metal. But more often all the same this type of material is produced using the electrolysis procedure. In the process of decomposition of some substances, complex composition into separate components with the use of current, it is possible to obtain a high-quality structural alloy. In addition to the nickel base, which is ninety-nine and a half percent of the alloy, some other components are present in its composition, such as iron, silicon, copper, magnesium and others.
|Name of semi-finished product||Normative documents||Designation of the characteristic|
N / mm 2
N / mm 2
|Hot-pressed pipe (323)||TU 14−3-1591−88||196||42||85.6|
|Cold-deformed pipe (382)||TU 14−3-1591−88||196||40|
|Cold-deformed pipe||TU 48−0814−11 / 0−83||392||25|
|Recommended heat treatment||Heating in the temperature range 620−700 ° C with an exposure of at least three minutes per millimeter of product thickness, but not less than half an hour. Cooling in the open air.|
Dependence of mechanical properties on the operating temperature of the material
N / mm 2
N / mm 2
|Pipes hot-pressed with the sizes 114 on 6 or cold-rolled with the sizes 38 on 1,8 marks НП2 (annealing at t ° 650 ° C)|
|Pipes hot-pressed with the sizes 114 on 6 or cold-rolled with the sizes 38 on 1,8 marks НП2|
Thanks to the nickel base, the alloy NP-2 is a sufficiently malleable and technological material that can be polished and many other kinds of processing. A strong protective film on the surface of semi-finished products ensures high resistance of products to corrosion of various types, and excellent resistance to high temperatures predetermined the use of such material in the most important production processes. However, a certain amount of sulfur, which is in alloys of this type, can increase the fragility of products during high-temperature exposure.
The range of products produced from the alloy NP-2 is very diverse. There is practically everything from sheets, tapes and ingots, to thin plates, wires of various diameters and rods. This raw material enjoys constant popularity in the chemical sphere, the work of scientific laboratories and the pulp and paper industry. Also, this type of materials has proved effective in engineering and in the manufacture of various appliances or structures for domestic use. By the way, nickel alloys can be used both as ready-made semi-finished products and for protective coating of products made of other materials.
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Our site offers a wide range of products from nickel alloys. Nikel NP2 is represented in the warehouse of LLC «_" with a full range of products that will satisfy any customer. The optimal price category and full compliance with the requirements of technical documentation will ensure the reliability and cost-effectiveness of production. If the standard size range does not suit the customer, Of the necessary products, according to the original sketches, invariably high quality of production and full compliance of all products from similar alloys The requirements of the normative documentation ensure the good working capacity of the semi-finished products offered by our company Individual work with every customer, regardless of the purchase price, is the motto of our work since the company was founded.