Aluminium

Chemistry and structure

Aluminium forms a thin oxide layer almost immediately. That passive layer is why it is widely described as rust-free in furniture use.

The metal has low density relative to steel and conducts heat quickly. Outdoor frames stay easy to move, but the surface can feel cold in winter and hot in direct sun.

How it behaves in furniture

It is strongest as a frame, leg or structural shell material where low weight and weather tolerance matter.

Its trade-off is softness compared with steel. Thin sections can dent, and threaded joints need careful design so repeated tightening does not strip the softer parent metal.

Care and design watch-outs

Moisture and wear note: Does not rust like ferrous steel, but salty and acidic conditions can still stain or pit the surface over time.

Care note: Wash with mild soap, rinse off salt and avoid abrasive pads on coated frames.

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