…7075 alloy is 5.5% zinc, 2.5% magnesium, and 1.6% copper, and has a tensile strength of about 60kgf/mm2. This zinc-based alloy is a Japanese invention called ESD (extra super duralumin), and was used in the framework of the Zero Fighter. It was strong, but difficult to process. … *Some of the terminology explanations that mention "Extra Super Duralumin" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…7075合金は亜鉛5.5%,マグネシウム2.5%,銅1.6%で,引張強さ60kgf/mm2程度の強度が得られる。この亜鉛系の合金は日本の発明でESD(超々ジュラルミンextra super duralumin)と呼ばれ,〈ゼロ戦〉の骨組みに使われた。強度は高かったが,加工性は悪い。… ※「extra super duralumin」について言及している用語解説の一部を掲載しています。 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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