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iso13485 iso9001

Name

Applicable Materials

Colors

Can be applied to

As machined

As machined

Aluminum, Steel, Stainless Steel

Ra 0.8μm - Ra 3.2μm

All post processes

Anodizing

Anodizing

Aluminum

Clear, black, grey, red, blue,green,orange,gold

Media Blasting, Tumbling, Alodine*

Chrome Plating

Chrome Plating

Acrylic

n/a

Enhanced Cosmetic Appearance

Electroless Nickel Plating

Electroless Nickel Plating

Aluminum, Steel, Stainless Steel

n/a

Media Blasting, Tumbling

Black Oxide

Black Oxide

Aluminum

Black

Bead blasted, Tumbling, Chem film*

Bead Blasted + Anodized type II

Bead Blasted + Anodized type II

Aluminum

Clear, Black, Red, Blue, Orange, Gold

Media Blasting, Tumbling, Type II Anodizing* Type III Anodizing with PTFE*

Zinc Plating

Zinc Plating

Steel, Stainless Steel

Clear (light blue coating). Black (glossy black coating).

Media Blasting, Tumbling, Passivation

Tumbling

Tumbling

Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper

n/a

All post processes, except Electropolish and Powder Coat

Nano coating

Nano coating

For applicable material processing, please refer to the catalog.

Full Coating or RAL color catalog

Please contact us for detailed instructions

Passivation

Passivation

Steel, Stainless Steel

n/a

Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting

Brushed

Brushed

Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper

Small:Draw 6.5-8mm wire to 2.0-4.0mm. Medium:Draw 16-18mm wire to 8.0-12.0mm. Large:Draw 100-120mm wire to 20-30mm.

All post processes, except Electropolish and Powder Coat

Electropolishing

Electropolishing

Steel, Stainless Steel

n/a

Passivation, Tumbling

*Additional finishing options include chromic acid anodizing, cadmium plating, copper plating, titanium anodizing (blue anodizing), gold plating, silver plating, and more. For materials not listed here, please contact us directly.

Cosmetic finishes

Surface finishes can serve either a functional or aesthetic purpose. Surface finishes that serve both purposes are deemed cosmetic finishes, and are used for cosmetic parts. Producing cosmetic parts requires additional measures to minimize defects such as hang marks and scratches from tools.

Non-cosmetic

Non-cosmetic

Primary machining marks will still be visible

  • As machined
  • Smooth machining
  • Fine machining
  • Electroless Nickel Plating
  • Anodized type III (Hardcoat)
  • Black oxide
Cosmetic on request

Cosmetic on request

Finishes can be either cosmetic or non-cosmetic as per request

  • Brushed + Anodizing type II
  • Bead Blasted + Anodizing type II
  • Bead Blasted
  • Brushed
  • Nano coating
Cosmetic by default

Cosmetic by default

These finishes will always serve a cosmetic function

  • Brushed + Electropolished
  • Polishing

Gallery of Surface finishing parts

Below are a small selection of the CNC machined parts and end-use components we produce for our customers.

Certification system
iso13485 iso9001
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What is Sunnyhowe

Sunnyhowe is a leading CNC parts processing factory, which has been serving the high-end manufacturing industry for over 25 years. We are committed to providing precise, efficient, and customized precision parts solutions for high-end manufacturing.

More about Sunnyhowe

FAQs
  • Material Suitability

    This involves choosing metallic materials that are suitable based on processing needs and product usage. For instance, aluminum alloy may be a good choice for products that require high corrosion resistance and aesthetics, but attention should be paid to its processing characteristics and potential surface issues.
  • Material Quality

    This refers to selecting high-quality metallic materials to ensure that the surface meets the design requirements after CNC processing.

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