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The Nickel-Chrome, Nickel-Chrome-Iron series metal alloy has a series of advantage of good anti-oxygen, high strength, not soften etc. . No distortion, and permanent elongations are very small while using with long hours. Among them, the metal alloy of Cr20Ni80 even has the good comprehensive function. It is the first choose to manufacture the high quantity heating elements
The heat-resistance of Iron-Chrome-Aluminium series metal alloy grows as the increment of the composition of Chrome and Aluminium. It has superior anti-oxidization, anti-sulfur and anti-cementite. It also has series of advantages as small density density, high surface load , high resistivity , high service temperature, long life-span and low price and ect. . Therefore it is widely used in heating elements of heaters.