Niobium is a chemical element; it has symbol Nb (formerly columbium, Cb) and atomic number 41. It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium, [3] and it has similar ductility to iron. Niobium oxidizes in Earth's atmosphere very slowly, hence its application in As shown in the table, aluminum alloys with nickel content have a higher cost compared to those without nickel. For example, Aluminum 7075 has a higher nickel content at 2.1% and has a higher cost compared to Aluminum 6061, which does not have nickel content. Recycling and Reuse of Aluminum-Nickel Alloys Titanium. hexagonal close-packed (hcp) Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in sea water, aqua regia, and chlorine . Nickel-based superalloys are high-performance alloys that are used in a variety of industrial applications due to their excellent mechanical properties. These alloys are composed of nickel and other alloying elements such as chromium, cobalt, molybdenum, and tungsten. The addition of these elements gives the alloys superior strength, corrosion Steel is an alloy of iron and carbon with improved strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels, which are resistant to corrosion and oxidation, typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in Zinc is a chemical element; it has symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. Steel - Alloying, Properties, Uses: Alloying elements are added to steels in order to improve specific properties such as strength, wear, and corrosion resistance. Although theories of alloying have been developed, most commercial alloy steels have been developed by an experimental approach with occasional inspired guesses. The first experimental study of alloy additions to steel was made in je5Otd.

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