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"""Nickel (Ni) is a chemical element whose atomic number is 28 that is located in group 10 of the periodic table. It is a transition metal with a silvery-white color and a small golden hue and is abundant in the earth's crust . Being a very malleable and ductile metal, it can be easily forged, rolled and polished. It is a good conductor of both heat and electricity and is resistant to high temperatures and electricity. It is a dense metal like iron. osmium or iridium. Nickel is found in the interior of the earth, mainly in the nucleus and in different minerals, meteorites ... Its melting point is 1455 ºC, and its density is 8908 kg / m3. Nickel is mainly Used in stainless steel and other alloys that are resistant to corrosion. The largest nickel producers would be: Indonesia, New Caledonia, the Philippines, Australia, China, Canada and Russia Nickel alloys are intended to improve certain properties depending on the use that is going to be given. The following groups of nickel alloys can be found: Nickel: Depending on the degree of its purity, the following types of alloy can be classified: Anodes (Nickel 99.3%) Electrolytic (Nickel 99.56%) Commercially pure nickel (Nickel between 99.6-99.97%) Nickel carbonyl powder and tablets (Nickel 99.95%) Among these alloys are Permanickel and Duranickel Nickel and Copper: Low nickel content alloys (Nickel 2 -13%) Cupronickles (Nickel 10-30%) Coin Alloys (Nickel 25%) Controlled electrical resistance alloys (Nickel 45%) Non-magnetic alloys (Nickel up to 60%) Within this group is Monel, a 2: 1 nickel-copper alloy by weight Nickel, iron and chromium Heat resistant alloys (Nickel 40-85%) Controlled electrical resistance alloys (Nickel 35-60%) Iron base superalloys (Nickel 0.2-9%) Iron base superalloys (Nickel 9-26%) Stainless steels (Nickel 2-25%) High nickel martensitic steels (Ni 18%). Nickel and iron: Forged steels (Nickel 0.5-9%) Cast Alloy Steels (Nickel 0.5-9%) Alloy cast irons (Nickel 1-6% and 14-36%) Magnetic alloys (Nickel 20-90%) Non-magnetic alloys (Nickel 10-20%) Stainless Steel Clad Steels (Nickel 5-49%) Iron-based superalloys (Nickel 0.2-9%) There are also the alloys with controlled thermal expansion, they can be divided into two other groups: Low coefficient (Nickel 36-50%) With selected expansion (Nickel 22-50%): They are called Nile 42, Ni-Span- C 902, and an Incoloy series. Nickel, Chromium, Molybdenum and Iron Those used for alloys reinforced by nickel-based solutions (Ni 40-80%) The one used for alloys reinforced by nickel base precipitation (Ni 40-90%). Their names would be: Astroloy Udimet, Hastelloy, MAR-M-252, Rene, Inconel, and Waspaloy. Nickel-based superalloys can also be found. Nickel is recyclable without losing its quality, therefore recycling is very important. When this metal is recycled, its second life is mostly as stainless steel and also as carbon steel. Even so, a great deal of the metal remains unrecycled. """

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