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Aluminium.

It looks like silver and is light. Therefore, it sometimes called light silver. It is light weight, soft and has high malleability, so it is easy to process. It also has corrosion resistance.
It is often used as an aluminum alloy. Duralumin is famous as an aluminum alloy. (Duralumin is used for aircraft materials, it is vulnerable to metal fatigue and is also easy to corrode.)
BVLGARI is representative as a watch case using aluminum.


銀に似た外見を持ち、また軽いことから、軽銀と呼ばれることもある。軽量であり、また、軟らかく、展性も高いため、加工しやすい。耐食性もある。
アルミニウムは合金として利用されることが多い。ジュラルミンがアルミ合金として有名である。(ジュラルミンは航空機材料に用いられている。金属疲労に弱く、腐食もしやすい面もある。)
時計としては、ブルガリが代表的である。

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