Answer
Oct 15, 2025 - 09:00 PM
What Happens to Raw Aluminum Over Time
Raw aluminum naturally develops a thin oxide layer when exposed to air.
This layer:
Forms quickly — within hours of exposure
Protects the metal from deep corrosion (unlike steel, which rusts)
Turns the surface a dull gray or chalky silver color over time
So, aluminum doesn’t rust, but it oxidizes, leading to:
Loss of shine / brightness
Slight roughness or pitting in harsher environments
Uneven discoloration if exposed to salt, UV, and water cycles
Raw aluminum naturally develops a thin oxide layer when exposed to air.
This layer:
Forms quickly — within hours of exposure
Protects the metal from deep corrosion (unlike steel, which rusts)
Turns the surface a dull gray or chalky silver color over time
So, aluminum doesn’t rust, but it oxidizes, leading to:
Loss of shine / brightness
Slight roughness or pitting in harsher environments
Uneven discoloration if exposed to salt, UV, and water cycles
