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Chromfir-tree tape HX9,5: 1kh60mm. – Avek Global, OOO | all.biz
Buy Chromfir-tree tape HX9,5: 1kh60mm.
Chromfir-tree tape HX9,5: 1kh60mm.

Chromfir-tree tape HX9,5: 1kh60mm.

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19.99 EUR
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Ukraine, Kiev
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Chromfir-tree - a thermoelectrode alloy. The basis it is formed nickel of 89 - 91%, and it is lame (8,7-10%). Also at an alloy there are impurity of iron, manganese, silicon, copper and cobalt. Total percentage of impurity does not exceed 1,4%. Alloy density = 8,71 g/cm3; point of hot processing of an alloy of +1200 °C; temperature of melting is +1500 °C; annealing is made at 900 °C; specific resistance = 0,66 mky • m; coefficient of linear expansion of 12,8·10-6 °C. Nickel gives to an alloy the heat resistance and resistance to corrosion at influence of hostile environment, thanks to education on a surface of a resistant film of an oxide of green color. In this alloy are successfully combined heat resistance with thermoelectric properties. The chromfir-tree possesses big termo-EDS therefore the electric power in the place of contact with other material when heating is developed. Change termo-EDS in the range of temperatures happens rectilinearly. For example, the thermocouple a chromfir-tree - platinum at difference of temperatures from 0 °C to 1000 °C possesses constant value by the thermo-electromotive strength of equal 33 mV. At excess of temperature more than 1000 °0C this property is lost.

Chromfir-tree wire apply more often than a circle or a tape. Such wire is irreplaceable by production of thermocouples, heating devices, rheostats and compensation wires. In thermocouples a chromfir-tree apply as a positive electrode of the thermocouple a chromfir-tree alumel, thanks to stable value of thermoeMF (on air) at temperatures up to 1000 °C. As dependence of thermoeMF of an alloy on temperature has linear character, it simplifies graduation of such thermometers. The chromfir-tree is used also in production of compensation wires.


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Chromfir-tree tape HX9,5: 1kh60mm.
Chromfir-tree tape HX9,5: 1kh60mm.
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