On the basis of gallium, other metals such as tungsten, cobalt, titanium and iron are added to make gallium-based alloys. Even if Ni65WC is a nickel-based alloy, there are nickel-based stainless steels, such as 304, 3 16 and so on. Nickel-based alloys containing tungsten, molybdenum, cobalt and titanium usually have the characteristics of high hardness, good wear resistance and high temperature resistance, and are usually used for special purposes, such as mining alloys, wear-resistant alloys, coatings, tool alloys and strong magnetism.