Powder-Coating vs Anodising

So, what is the difference? Anodising is an inorganic finish that is a straightforward electrochemical process, which increases the thickness of the natural oxide layer on aluminium. Powder-coating conversely is a technique used to apply decorative finishes, in a process that electrostatically charges the powder, spraying it onto the aluminium and then it cures in an oven into a smooth coat.

Advantages of Anodising

• Easy maintenance with periodic cleaning with water and a mild detergent
• The anodic coating will not peel or flake because it is part of the metal
• Anodising gives of a translucent metallic appearance because the base metal can be seen underneath the coating
• Sunlight does not affect it and is predominantly fade resistant
• Consistent finishing, regardless of angle viewed from
• There are no VOC’s emitted

Cons of Anodising

• Surface can be affected by acidic pollutants
• Potential for colour variation between batches
• Usually only available in a matt or polished finish
• Can only be applied to aluminium

Pros of Powder-Coating

• Dents and scuffs can be easily repaired using liquid coating that matches the original colours
• Powder-coated aluminium will look the same as other components powder-coated in the same colour/s
• Huge range of finishes available
• More colour uniformity between batches
• No air pollution from the finish

Cons of Powder-Coating

• Filiform corrosion resembling threadlike filaments may form under the finish if incorrect pre-treatment methods are used
• If the applied coating film is either too thick or thin, or if the powder coating material is too reactive, orange peel may occur
• Chalking which looks like white powder on the surface, may appear if the incorrect curing process is used

View our anodising and powder-coating options HERE.

References:

https://sculptform.com.au/aluminium-surface-treatment-anodising-vs-powdercoating/