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Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In a pure form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.Chemically, gold is a transition metal and a group 11 element.It is one of the least reactive chemical elements and is solid under

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Copper, tin zinc, (Gun metal) 88 % Copper, 2 % Zinc 10 % tin. The metal is very strong, resistant to water and atmospheric corrosion. Used for boiler fitting, bushes, bearings, glands etc. Copper and tin (Bell metal): Copper 80% and tin 20%. Hard and resistant to surface wear. …

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They are magnetic and they typically contain 12-18% chromium and a moderate carbon content (0,10%). They have high strength and rather low ductility (or formability) The Austenitic steels are non-magnetic and can be easily welded, containing 7-20% nickel, which increases their corrosion resistance, in addition to the 17-25% level of chromium

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