Surface Finishes
Surface treatment forms a layer on the substrate with mechanical, physical and chemical properties distinct from the matrix.
The purpose of surface treatment is to meet corrosion resistance, wear resistance, decoration or other special functional requirements. For metal machining parts the more commonly used methods are mechanical grinding, chemical treatment, surface heat treatment and spray surfacing.
The first step in any surface treatment is cleaning the workpiece: deburring, de-oiling and descaling. A finish applied over a poorly cleaned part fails early no matter how good the coating itself is.
Finishes We Usually Apply
Anodized
An oxide layer on aluminium for corrosion resistance, surface hardness and colour.
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Sand Blasted
A uniform matte texture that removes tool marks and keys the surface for later coating.
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Polished
A smooth reflective surface for appearance parts and for reducing surface friction.
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Electroplated
A deposited metal layer for corrosion protection, conductivity or appearance.
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Powder Coated
A durable coloured coating for sheet metal parts and frames used outdoors.
Learn MoreSurface Finishes FAQ
Which finish should I choose?
It depends on the substrate and the job the finish has to do. Anodizing suits aluminium where hardness and corrosion resistance matter, powder coating suits steel sheet metal exposed to weather, and electroplating suits steel parts needing corrosion protection with a thin dimensional build up.
Can you match a colour?
Send a colour reference or a sample part. Anodized and powder coated colours are matched against your reference before the production lot is coated.
Do finishes affect part dimensions?
Yes. Plating and coating add thickness, and anodizing both consumes and adds material. Tell us the finish at quotation so tolerances are adjusted before machining rather than after.
What if I need a finish not listed here?
Contact us. We will source the treatment and confirm whether it is compatible with your material and tolerance.
Related Pages
Cannot Find Your Required Surface Finish
Tell us the substrate, the environment the part works in and the appearance you need.