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The main useful qualities of such products as nichrome tape depend primarily on the grade of alloy used to make it. After all, the quantitative and qualitative relationship of not only the chromium-nickel base of the semi-finished product, but also additional alloying components, has a significant influence both on the mechanical and technological properties of the finished product.
Properties of X20N80 tape
Products made from the alloy Kh20N80 containing twenty percent chromium and eighty percent nickel have a lot of useful and sought-after qualities in the industry.
The percentage composition of H20N80 is GOST 10994−74 .
The high content of nickel in the alloy determines the good resistance of the product to corrosion wear and ensures that the aggregate is not deformed or destroyed even under the influence of very high temperatures. By the way, the X20N80 tape actively resists not only the oxidative processes occurring in the working area, but it is completely inert to the influence of most liquid or gaseous industrial aggressors.
|Physical properties of nichrome X20N80|
|Ud. Weight g / cm 3||8.4|
|Operating temperature t ° С||Up to 1250 ° С|
|Melting point t ° C||1400 ° C|
|Annealing temperature t ° С||870−1040 ° C|
|Ud. Electric resistance Ohmmm 2 / m||1.18|
|Thermal conductivity K [W / (m · K)]||92|
|Mechanical strength GPa||0.75−0.8|
Another important quality determining the purpose of this product is its high index of electrical resistance. It is this property that determines the main area of application of the semi-finished product. It is important to note that when the working zone temperature rises, the resistance of the material deviates little from its nominal parameter, so that the equipment does not fail even after numerous cycles of switching on and off.
Application of X20N80 tape
The use of such a nichrome tape is not limited to the production of structural elements of heating of a particular type of equipment. Such a semi-finished product is used for the manufacture of resistors and resistance elements. Furnaces, chambers, for drying, water heaters or appliances for heating the room, here is a far from complete list of all possible applications for such a sought-after material. When delivered in a soft state (after heat treatment), the tape should not have a thickness less than two tenths of a millimeter, thinner products are delivered to the customer after special hardening treatment. Standardization of the main important parameters, both the production process of this type of product, and its geometry allows to ensure the quality of manufacturing at each technological stage.
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