Aluminium 5083 for CNC machining

Marine parts, welded structures, cast tooling plate (flat and stress relieved).

Family

Aluminium

Density

2.66 g/cm³

Machinability

average (3/5)

Relative cutting speed

about 72% of aluminium 6082

Indicative price

€7 per kg

What to know

Excellent corrosion resistance. Softer and more “gummy” to machine than 6082, which costs time on finishing.

Design tips

Anodizing adds 5–25 µm (Type II) and changes hole sizes slightly; mask precision bores or state that dimensions apply after coating.

Cheaper alternative

Aluminium 6082-T6: Unless you need 5083’s weldability in seawater or cast-plate flatness, 6082 machines cleaner and faster.