Lo‐Ex (English spelling)
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A type of heat-resistant aluminum alloy. It contains about 12% silicon, 1% copper, 1% magnesium, and 2% nickel. Its high silicon content means it has low thermal expansion, while the copper and magnesium give it heat treatability and increase its strength, and the nickel gives it heat resistance. Its heat resistance and low thermal expansion make it useful for pistons in internal combustion engines. The name Lo-Ex comes from its low expansion coefficient. It is used in castings and forgings. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
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耐熱アルミニウム合金の一種。ケイ素12％，銅1％，マグネシウム1％，ニッケル2％程度を含んでいる。ケイ素が多いために熱膨張が小さく，銅，マグネシウムによって熱処理性を与えて強度を上げ，ニッケルは耐熱性を与えている。耐熱性と熱膨張の小さいことから，内燃機関のピストンなどの用途がある。Lo‐Exの名はlow expansion coefficient(低膨張率)に由来している。鋳物あるいは鍛造品として使用される。
出典 株式会社平凡社世界大百科事典 第２版について 情報 |
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