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Bead Blast Surface Finish Chart: Smart Vietnam’s Guide to Consistent, High-Quality Metal Finishing

Bead Blast Surface Finish Chart: Smart Vietnam’s Guide to Consistent, High-Quality Metal Finishing

07/07/2025

At Smart Vietnam, we know a good finish isn’t just about looks—it’s about getting your gear performing at its best. Whether you’re kitting out high-end enclosures or knocking together custom brackets, a top-notch bead blast finish makes all the difference. Here’s a quick run-through on what bead blasting is all about, and how our Bead Blast Surface Finish Chart helps keep things spot-on every time.

What is Bead Blasting?

Bead blasting is a controlled process where fine glass beads are propelled at high velocity onto a metal surface. Unlike aggressive sandblasting, bead blasting is gentler—it cleans, peens, and refines the texture without significant material removal.

  • Removes scale, discoloration, and oxidation
  • Creates a uniform satin or matte appearance
  • Improves adhesion for coatings and anodizing
  • Enhances corrosion resistance and durability

At Smart Vietnam, bead blasting is available for aluminium, stainless steel, and other alloys, tailored to your project’s finish and functional requirements.

 

Why Use a Bead Blast Surface Finish Chart?

Surface finish terms like “matte,” “satin,” or “fine blasted” can be subjective. The Bead Blast Surface Finish Chart eliminates uncertainty by:

  • Quantifying roughness (Ra) so everyone shares the same expectations
  • Showing visual reference samples to confirm texture and appearance
  • Defining bead size, blasting pressure, and process parameters

This approach ensures repeatable, traceable quality, whether your production run is ten units or ten thousand.

 

Components of Smart Vietnam’s Bead Blast Surface Finish Chart

Our chart includes four key elements:

Surface Roughness (Ra)

Roughness Average (Ra) indicates microscopic peaks and valleys measured in micrometres (µm).

Examples of common finishes:

Finish Type Ra (µm) Application
Fine Satin 0.8 – 1.2 Cosmetic panels, medical housings
Standard Satin 1.2 – 2.5 General enclosures, brackets
Coarse Texture 2.5 – 3.5+ Adhesion prep, functional surfaces

 

We verify Ra values using calibrated roughness testers.

Bead Size (Mesh)

Bead size determines the texture profile.

Glass Bead Size Mesh Size Resulting Finish
#23 60 – 80 mesh Fine, smooth matte
#13 30 – 40 mesh Standard satin
#8 14 – 30 mesh Coarser, more tactile

 

Visual Reference Photos

Each finish level includes magnified photos of actual test panels produced in our facility, under consistent lighting. This ensures visual alignment before production begins.

Processing Parameters

We record and control:

  • Air Pressure: Typically 3–6 bar

  • Nozzle Distance: 150–250 mm

  • Traverse Speed and Coverage

These details ensure repeatability across batches and projects.

 

Applications at Smart Vietnam

Our bead blast finishes are trusted by customers in:

  • Electronics and Semiconductor Enclosures
  • Medical Device Casings
  • Architectural Hardware
  • Precision Mechanical Assemblies

Each application benefits from enhanced appearance, improved adhesion, and corrosion resistance.

 

Why Choose Smart Vietnam for Bead Blasting?

  • Certified Quality: ISO-controlled processes, material traceability, and rigorous inspection.
  • Technical Expertise: Decades of experience with aluminium, stainless steel, and specialty alloys.
  • Customization: We can create project-specific finish samples and reference charts tailored to your requirements.
  • End-to-End Service: From laser cutting and CNC bending to finishing and assembly, everything is done in-house.

 

Request a Bead Blast Surface Finish Chart Sample

If you are planning a project and want to ensure consistent, high-quality bead blast finishes, Smart Vietnam’s team is here to help.

Contact us to:

  • Request a sample finish chart
  • Discuss your specific surface requirements
  • Arrange a demonstration of our finishing capabilities

Smart Vietnam – Quality Metalwork, Done Right.

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