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Resistance wire for electric heater
Resistance wire for heating elements

Resistance wire round or flat

Our high resistance electric heating alloy is stable in performance, allowing high surface load, having small specific gravity and stable co-efficiency in temperature and a high working temperature with maxim of 1400°C. Besides, we have twelve different kinds of alloys, each type has its own temperature ranges and resistivity.

We can also supply other products according to your requirement, coiled wires, wave-shaped wires and different kinds of standard or non-standard electrical heating elements.

Comparison of FeCrAl and NiCr

1. Ferrum-Chromium-Aluminium (FeCrAl) alloys

Main advantages: The operating temperature of FeCrAl alloy is high and it can reach as high as 1400°C. (0Cr21A16Nb, 0Cr27A17Mo2, etc.) While it has a long lifespan, it also has a high surface load. Additionally, it is characterized by exceptionally good oxidation resistance, high resistivity, cheap prices, etc.

Main disadvantages: It is mainly exhibited in its low strength under high-temperature environment. With the rise of its operating temperature, its ductility soars resulting in the components to be easily deformed. Furthermore, the components cannot be readily bent and repaired.

2. Nickel-Chromium (NiCr) alloys

Main advantages: Notwithstanding its high strength relative to FeCrAl alloy, it is not easily deformed under high temperature. In addition, its structure is also not readily changed while it has comparatively better ductility. Moreover, it also has a high radiation and it is non-magnetic in nature. On top of that, it is corrosion resistance and it also has a long lifespan.

Main disadvantages: As it is made from the scarce nickel metals, the prices of its series of products are higher up to a few times that of FeCrAl alloy. Besides, its operating temperature is lower than that of the FeCrAl alloy.

Resistance heating strip

The resistance heating strip refers to the cross-sectional rectangular metallic strip with round corners. Its thickness ranges from 0.025mm to 2mm, while its width is usually shorter than 5mm. The proportion between its width and thickness ranges from 2:1 to 50:1, so on and so forth. As the form factor of a strip is in the shape of a belt, it is sometimes also called ultra-narrow flat belt. In comparison with the most common round wire, the resistance heating strip has several unique advantages in the areas of heat dissipation, surface of the welding interfaces, corrosion resistance, tensile strength control, etc.

The resistance heating strip is widely used in the applications of high-end instruments, electrical appliance components, vacuum parts, electrical resistance devices as well as the wire leads and the mechanical parts in the semiconductor equipment. A strip with a width of 2mm or less fulfills the inadequacy of a ultra-narrow belt that could not be accomplished by splitting the strip.

How to choose resistance heating wire

how to choose the best material and diameter for the resistance heating wire on their applications, or how to choose the best product that has relatively higher price-performance ratio under the appropriate working environment and usage requirements. We will discuss with everyone the methods to be used for choosing the best resistance heating wire in the following section.

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and Raw Materials of Heating elements.

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