The high-temperature strength is higher than that of iron-chromium-aluminum, and it is not easy to deform under high-temperature use. Its structure is not easy to change, its plasticity is better, and it is easy to repair. Disadvantages: Due to the use of rarer nickel metal materials, the price of this series of products is up to several times higher than that of iron, chromium and aluminum, and the use temperature is lower than that of iron, chromium and aluminum.