CuNi 44 Wires & Strips

Product Details:

ISOTAN® is notable for its low temperature coefficient and high resistance to oxidation and chemical corrosion.

The alloy is non-magnetic. It is suitable for electrical resistors, potentiometers, heating wires, heating cables and mats. Ribbons are used for heating of bimetals.

For resistance and heating applications, the maximum working temperature in air is +600 °C.

Form of Delivery

ISOTAN^® is supplied in the form of round wire in the dimension 0.02 to 8.00 mm Ø in bare, oxide-insulated or enamelled condition. The range also includes flat wires (see Technical Information), stranded wires, ribbon sheets and foils.

Notes on Treatment

ISOTAN® can be worked easily. It can be soldered and brazed without difficulty. All known welding methods are applicable.

Additional Information:

• Item Code: 74082200
• Delivery Time: Ex Stock

Product Details:

CuNi44 offers high electrical resistivity and very low temperature coefficient of resistance (TCR). Due to its low TCR, it finds use in wire-wound precision resistors that can operate up to 400°C (750°F). This alloy is also capable of developing a high and constant electromotive force when coupled with copper. This property allows it to be used for thermocouple, thermocouple extension and compensating leads. It is easily soldered, welded, and offers good corrosion resistance against atmospheric conditions.

Product Details:

Cuprothal 49 is an austenitic copper-nickel alloy (CuNi alloy) for use at temperatures up to 600°C (1110°F). The alloy is characterized by high electrical resistance, high ductility and good corrosion resistance.

In finer sizes the alloy's negligible temperature coefficient of resistance combined with its high resistivity makes it useful for the winding of precision resistors which must not change in resistance over a limited range in temperature. For this purpose the alloy is identified as Cuprothal 49 TC.

Other typical applications are:

• Temperature-stable potentiometers
• Industrial rheostats
• Electric motor starter resistances.