A casting aluminum alloy made by adding about 4% copper and 5% silicon to aluminum. It is quenched from 500℃ and tempered at 160℃ for about 6 hours, which increases its strength through precipitation hardening. There are two types: one with more silicon and less copper that prioritizes castability, and one with less silicon and more copper that prioritizes strength. It can be welded and is heat resistant. It is used for machine parts, especially automobile engine parts such as cylinder heads and crankcases. Aluminum Alloy [Okubo Tadatsune] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
アルミニウムに4%程度の銅,5%程度のケイ素を加えた鋳造用アルミニウム合金。500℃から焼入れし,160℃で約6時間焼戻し処理を行うと析出硬化によって強度が上がる。ケイ素を多めにし銅を少なめにして鋳造性を重視するものと,ケイ素を少なめにし銅を多めにして強度を重視するものがある。溶接もでき耐熱性もある。機械部品,とくにシリンダーヘッドやクランクケースなど自動車のエンジン部品などの用途がある。アルミニウム合金【大久保 忠恒】
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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