Chromium

chromium is a rattling unmanageable, brittle, gray metal, which is sometimes meet trigger-happy to as Siberian red lead. It does not exhaust slow and be heralds shiny and bright when it is polished. The shiny pull smoothen on our automobile bumpers and door handles is usually electroplated atomic number 24. Most chromium comes from something called chromite which is a mixture of chromium , iron, and oxygen. Chromite is a common quite ordinary black mineral that no unrivaled very noticed until more recent times. Nearly all the worlds come unwrap of chromite comes from Zimbabwe, Russia, Turkey, South Africa, Cuba, and the Philippines. The United States imports almost all its chromite. Chromium is added to other metals to prepare them harder and more revolting to chemicals. Small quantities entangled with leaf blade make the metal stainless. Stainless nerve is utilize to make cutlery and kitchen equipment because it does not rust easy and takes a mirror-like p olish. This steel contains about 13 partage chromium and 0.3 percent carbon. The hardness of steel potentiometer be change magnitude by adding small quantities of chromium to it. Chromium steel alloys (mixtures containing wiz or more metals) are used to make fit out plating for tanks and warships. They are also used for ballock bearings and the hard cutting edges of high-speed machine tools.

Nickel is highly patient of to electric electric current and is often added to chromium steels to make them easier to work. For example, stainless steel sinks can be touch out from flat sheets of steel that can contain 18 percent chomium a nd 8 percent nickel. When nickel is mixed wi! th chromium, the resulting metal can stand very high temperatures without corroding. For example, the heating elements of toasters can be made from an alloy that is 80 percent nickel and 20 percent chromium. This metal operates at a temperature of... If you want to stay put a full essay, order it on our website: BestEssayCheap.com

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