Tin - Tin

Japanese: スズ(錫) - すず

The atomic symbol is Sn. The atomic number is 50, the atomic weight is 118.710. The melting point is 231.928℃, and the boiling point is 2603℃. It is one of the metal elements that has been used since ancient times as bronze. There are three allotropes of tin: gray tin (α-tin, cubic crystal system), white tin (β-tin, tetragonal crystal system), and γ-tin (orthorhombic crystal system). White tin is the most commonly found at room temperature. It is stable in air and highly malleable. It is soluble in acid and hot caustic alkali solutions. The main ore is cassiterite. The ore is dressed to a grade of 60-70%, which is then smelted by dry reduction to produce crude tin, which is then electrolytically refined to a grade of 99.98% or more. Tin plating (mainly tinplate) has a wide range of uses. Tin alloys include bronze, gunmetal, solder, bearing alloys, type alloys, and various fusible alloys.
→ Related itemsNon-ferrous metals

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

元素記号はSn。原子番号50，原子量118.710。融点231.928℃，沸点2603℃。青銅として最も古くから使用された金属元素の一つ。灰色スズ（αスズ，等軸晶系），白色スズ（βスズ，正方晶系），γスズ（斜方晶系）の３種の同素体があるが，常温で普通に見られるものは白色スズ。空気中で安定で展延性に富む。酸，熱苛性アルカリ水溶液に可溶。主要鉱石はスズ石。選鉱して品位60〜70％とした精鉱を乾式還元製錬して粗スズとし，電解精製で品位99.98％以上にする。スズめっき（主としてブリキ）は用途が広い。合金には青銅，砲金，はんだ，軸受合金，活字合金，各種易融合金などがある。
→関連項目非鉄金属

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