Alloy materials are an important industrial raw material in the 21st century. Industrial metal elements play an irreplaceable advantage in industrial production in different fields. The use of alloy materials and the invention of new metallurgical technologies promote the birth of various alloy materials. Electrothermal alloys in alloy materials, usually electrothermal alloy materials, many people have a familiar and unfamiliar perception; electrothermal alloy materials, according to the composition of the chemical elements and the material structure of the materials, we usually fall into two categories: iron Chromium-aluminum electrothermal alloy series and nickel-chromium electrothermal alloy series, two kinds of electrothermal alloy materials have many advantages due to their performance and advantages, and have been widely promoted and applied in product application.

Iron-chromium-aluminum electrothermal alloy has a high use temperature, the highest temperature can reach 1400 degrees, long service life, high surface load, good oxidation resistance, high resistivity and low price. The iron-chromium-aluminum electrothermal alloy has low high-temperature strength, and its plasticity increases as the use temperature rises, and the component is easily deformed and is not easily bent and repaired.

 Nickel has a higher high-temperature strength than iron-chromium-aluminum, and is not easily deformed under high-temperature use. Its structure is not easy to change, plasticity is good, easy to repair, its emissivity is high, non-magnetic, strong corrosion resistance, long service life, etc. However, due to the use of the scarce nickel metal material, the price of nickel-chromium electrothermal alloy is up to several times higher than that of iron-chromium-aluminum, and the use temperature is lower than that of iron-chromium-aluminum.

 Electrothermal alloy products are generally made of thin wire (electric wire), round wire, flat strip (resistance tape), can also be made into pipes and castings under special requirements; each electrothermal alloy material has high electrical resistivity and resistance. It is characterized by thermal fatigue, corrosion resistance and high temperature shape stability, which can effectively convert electrical energy into heat energy. The electrothermal alloy forms a dense oxide film on the surface at high temperatures and has very good oxidation resistance.

Electrothermal alloys are widely used in metallurgical machinery, medical, chemical, ceramics, electronics, electrical appliances, glass and other industrial heating equipment and civil heating appliances. It plays a very important role in our lives.