Choose the Right Finish for Your Material

 Different surface finishing engineering can be applied to different materials. Find below a quick cheat sheet of surface finish and material compatibility.

 

Name

Material Compatibility

Smoothing

All plastics and metals

Bead blasting

All metals

Powder coating

All metals

Anodizing clear (type II)

Aluminum alloys

Anodizing color (type II)

Aluminum alloys

Anodizing hard coat (type III)

Aluminum alloys

Electropolishing

All metals

Black oxide

Stainless steel and copper alloys

Chromate conversion coating

Aluminum and Copper alloys

Brushing

All metals

 

 

Our Surface Finishes

 

Here is a list of optional surface finishes. For custom surface finishes such as electroplating or polishing, please contact sales@zdcpu.com.

 

As Machined

For as machined all sharp edges are removed and parts are deburred. Tool marks are visible.

 

Smoothing

A finishing CNC machining operation can be applied to the part to reduce its surface roughness. Machine marks are less evident but still visible.

 

Bead Blasting

Bead blasting adds a uniform matte or satin surface finish on a machined part, removing the tool marks. This is used mainly for visual purposes and comes in several different grits which indicate the size of the bombarding pellets.

 

Powder Coating

Powder coating is a strong, wear-resistant finish that is compatible with all metal materials and can be combined with a bead blasting to create parts with smooth and uniform surfaces and excellent corrosion resistance.

 

Anodizing Color (Type II)

Type II anodizing is mainly used to produce parts with a uniform, aesthetically pleasing surface and provides good corrosion and limited wear resistance.

 

Anodizing Hardcoat (Type III)

Type III anodizing provides excellent corrosion and wear resistance, suitable for functional applications.

 

Electropolishing

Electropolishing is an electrochemical process used to polish, passivate and deburr metal parts. It is useful to reduce surface roughness.

 

Black Oxide

Black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection.

 

Chromate Conversion Coating (Alodine/Chemfilm)

Chromate conversion coating is used to increase the corrosion resistance of metal alloys while maintaining their conductive properties.

 

Brushing

Brushing is produced by polishing the metal with grit resulting in a unidirectional satin finish. Not advisable for applications where corrosion resistance is required.

 


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