Which alloy is used for making heater & thermocouple element, Electrical Engineering

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Give the names of four alloys along with their composition, which are used for making heater and thermocouple elements.

Constantan or Eureka {(55 to 60 percent) Cu, (45 to 40 percent)Ni}

German silver (an alloy of CU, Zn and Ni)

Manganin (86 percent Cu, 2 percent Ni, 12 percent Mn)

Nichrome (61 percent Ni, 15 percent Cr, 24 percent Fe)


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