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Ajax Tungsten Corporation - Chemical Element Stock Certificate - Mining Stocks For Sale
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Ajax Tungsten Corporation - Chemical Element Stock Certificate - Mining Stocks: $26.00
Stock printed by Goes. Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternate name. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all known elements barring carbon (which sublimes at normal pressure), melting at 3,422C (6,192F; 3,695K). It also has the highest boiling point, at 5,930C (10,710F; 6,200K). Its density is 19.25 grams per cubic centimetre, comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw. Tungsten occurs in many alloys, which have numerous applications, including incandescent light bulb filaments, X-ray tubes, electrodes in gas tungsten arc welding, superalloys, and Item ordered may not be exact piece shown. All original and authentic.
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Ajax Tungsten Corporation - Chemical Element Stock Certificate - Mining Stocks $26.00
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