铝合金

• 釒(metal)RADICAL
• 吕(tone law; surname Lü)PHONETIC

The metal aluminum carries the radical for metal and the sound reading from the character Lü.

• 亼(gather; converge; cover up)ASSOCIATIVE
• 口(mouth; box)RADICAL

A lid sealed tightly over a box's mouth combines into one whole.

• 金(gold; metal (figurative))ASSOCIATIVE

Metal is an ancient image of precious metal hidden underground, gleaming and sparkling.