Stainless Steel Surface Finish
Sandblasted Stainless Steel Finish
Specifications, Supply & Technical Guide
Sandblasted stainless steel finish is a matte, textured surface produced by controlled abrasive blasting. For procurement, the blasting media, process route, surface roughness, visual limit, substrate grade, product form and post-blast protection should be agreed rather than specifying “sandblasted” as an appearance term alone.
Illustrative Blasted Surface
BLAST
Illustrative visual reference only. Actual appearance varies with abrasive media, particle size, blasting pressure, distance, substrate condition and lighting. Use an approved sample when visual consistency is critical.
Finish Definition
What is a sandblasted stainless steel finish?
A sandblasted stainless steel finish is created by projecting abrasive media onto the stainless surface under controlled conditions. The treatment changes the visual texture and produces a more diffuse, low-gloss appearance than a smooth mill finish.
The word “sandblasted” is a broad commercial term. The actual result depends on the chosen blasting media, media size, equipment settings, exposure time, nozzle distance, substrate condition and any post-blast cleaning or passivation route.
Where roughness or appearance matters, specify the required Ra / Rz, approved sample, reflectivity or color limit, defect criteria and cleanliness requirement in addition to the finish name.
Define these points before approving a sandblasted finish
- Stainless steel grade and product form
- Blasting media and process route
- Ra / Rz requirement when measurable roughness is critical
- Reflectivity / color tolerance where applicable
- Approved sample and finish-limit reference
- Post-blast cleaning, protection and packaging
- Defect acceptance and maintenance guidance
Finish Evidence
Technical and application evidence for sandblasted finish approval
To keep this finish page lighter, the evidence requirement is consolidated into two image positions. Replace the placeholders with real production evidence before final approval.
Technical evidence image
Use one combined image showing the real blasted surface, sample panel and, where available, an Ra / Rz reading or approved finish-limit comparison.
Application image
Use one real project or fabricated-part photo that clearly shows the sandblasted stainless steel finish in use.
Supply Specification
Sandblasted finish stainless sheet, plate and fabricated part ordering matrix
Define the substrate, dimensions, blasting route, surface target and post-processing requirements together. The table below is an RFQ checklist, not live inventory.
Specify grade, thickness, width, length, visible side, blasting media and surface target.
Add plate dimensions, flatness, masking, edge and post-blast cleaning requirements.
Provide drawings, masking zones, visible surfaces and final finish requirements.
| Supply Form | Required Order Data | Sandblasted Surface Control | Processing / Delivery Notes |
|---|---|---|---|
| Sandblasted Sheet | Grade, thickness, width, length, quantity and dimensional tolerance | Media / process, Ra/Rz if required, approved sample and defect criteria | Confirm masking, cleaning, protection and packaging in the quotation |
| Sandblasted Plate | Grade, thickness, width, length, quantity, flatness and visible face | Uniform matte appearance with agreed measurable or visual limits | Confirm post-blast cleaning, edge condition and handling |
| Cut Blanks | Grade, thickness, blank size, quantity and drawing if applicable | Define whether blasting occurs before or after cutting | Masking, burr and protection should be defined before production |
| Fabricated Part | Drawing, grade, dimensions, quantity, visible zones and masked zones | Define final blasted coverage, roughness and visual inspection criteria | Confirm whether welding / forming precedes final blasting |
Availability, dimensional limits, blasting media and processing capability must be confirmed against the actual quotation.
Finish Selection
Sandblasted vs bead blasted vs brushed vs satin stainless steel finish
Choose the finish according to texture, reflectivity, roughness, contamination control, fabrication sequence and final visual requirements rather than by finish name alone.
| Finish | Visual Character | Process Character | Selection Logic | Specification Note |
|---|---|---|---|---|
|
Sandblasted
This Page |
Matte, diffuse and visibly textured | Abrasive blasting with media / settings to be specified | When a non-directional blasted texture is required | Media, Ra/Rz and an approved sample should be defined |
| Bead Blasted | Uniform matte appearance | Blasting using bead-type media | When the project specifically calls for a bead-blast route | Do not assume all abrasive-blasted finishes use the same media |
| Brushed | Visible directional grain | Mechanical abrasive brushing | When a linear directional texture is desired | Brush direction should be shown on drawings |
| Satin | Refined, low-gloss appearance | Process depends on the project finish definition | When a softer decorative surface is preferred | Do not assume satin and sandblasted are equivalent |
Processing Capability
Processing routes for sandblasted stainless steel
The sequence matters. Cutting, forming, welding, masking and final blasting should be planned together so the finished surface is not damaged or unintentionally reworked.
Surface Preparation
Define the incoming surface condition and cleanliness required before abrasive blasting.
Masking
Identify areas that must remain unblasted, protected or dimensionally unaffected.
Abrasive Blasting
Control media, process settings, coverage and the approved target appearance.
Cutting / Fabrication
Define whether fabrication occurs before or after the final blasting operation.
Post-Blast Cleaning
Remove residual media and contamination using a route appropriate to the stainless grade and project.
Protection & Packing
Protect the final surface from handling marks, contamination and transport damage.
Surface Control
Roughness, blasting route, visual tolerance and cleaning guidance
The content matrix requires unique, reviewable finish data. Do not invent Ra/Rz or process capability values; publish project or production values only when supported by actual evidence.
Ra / Rz & Blasting Route
Sandblasted finishes do not have one universal roughness value. Roughness depends strongly on media, media size, process settings and substrate condition.
- Ra target: specify by project / approved sample
- Rz target: specify where required
- Media type / size: record in the process specification
- Measurement method: agree before inspection
Reflectivity, Color & Defect Acceptance
Use controlled viewing and an approved sample when the final matte appearance is important.
- Define acceptable matte / reflectivity variation
- Use a limit sample where color variation matters
- Set criteria for uneven blasting and missed areas
- Set criteria for scratches, stains and handling marks
Grades, Protection & Cleaning
Confirm compatible grades and product forms in the RFQ. After blasting, protect the surface from contamination and use a cleaning route appropriate to the final application.
- Grade / form: confirm by quotation
- Residual blasting media should be removed as specified
- Use clean handling and packaging for visible surfaces
- Test unfamiliar cleaners on an approved sample first
Application Guidance
Where is sandblasted stainless steel finish used?
Sandblasted stainless steel is selected when a diffuse, textured metallic surface is preferred and the project can control blasting, cleaning, handling and final acceptance.
Architectural Metalwork
Panels, trims and custom metalwork where a matte non-directional texture is part of the design.
Decorative Fabrication
Custom parts and assemblies requiring a controlled blasted appearance rather than a brushed grain.
Equipment Enclosures
Visible enclosures and housings where low reflectivity and a textured surface are preferred.
Fixtures & Displays
Retail, hospitality and display components requiring a uniform matte metallic effect.
Custom Panels
Sheet or plate panels supplied with project-defined blasting media and appearance criteria.
Fabricated Components
Parts blasted after forming or welding so the final surface is applied at the end of fabrication.
Standards & Equivalence
How to specify a sandblasted stainless steel finish without ambiguity
“Sandblasted” should be treated as a process and appearance description unless the purchase specification also defines the media, measurable requirements and approved visual reference.
- Finish designation State sandblasted / abrasive blasted together with the project finish definition and approved sample.
- Blasting media Record the media type, size or other process detail needed to reproduce the approved finish.
- Ra / Rz requirement Add measurable roughness limits when required, with the agreed measurement method and direction.
- Material specification Specify stainless grade, dimensions, tolerances, documentation and finish requirements separately.
Do not assume all “sandblasted” stainless steel has the same texture or roughness.
Different abrasive media, particle sizes, equipment settings and substrate conditions can produce visibly different results.
The finish name does not by itself define chemistry, mechanical properties, dimensions, Ra/Rz, cleanliness or complete visual defect criteria.
For critical appearance, approve the media / process route, sample panel, viewing condition and inspection method before production.
Technical FAQ
Sandblasted stainless steel finish FAQ
What is a sandblasted stainless steel finish?
Is sandblasted stainless steel the same as bead blasted stainless steel?
What is the typical sandblasted surface roughness?
Does sandblasting reduce surface reflectivity?
Can sandblasting be applied after fabrication?
How should blasting media be specified?
How should sandblasted stainless steel be cleaned?
What information should be included in a sandblasted stainless steel RFQ?
Related Resources
Continue your stainless steel specification
Technical Evidence & Review
Data sources and document control for this finish page
Required evidence sources
- Ra / Rz values should come from an actual measurement record or approved production test.
- Blasting media and production route should be supported by the actual process specification or supplier capability.
- Visual tolerance should be defined using controlled viewing and an approved / limit sample.
- Compatible grades, forms, protection and processing claims should match current quotation capability.
- Application images should be real project, production or permission-cleared evidence.
Document control
Technical Quote
Request a technical quote for sandblasted stainless steel
Send the material, dimensions and blasting requirements together. For appearance-critical work, include a drawing, reference image or approved sample requirement.
- Stainless steel grade
- Sheet, plate, blank or fabricated part
- Thickness × width × length
- Required quantity
- Blasting media / process requirement
- Ra / Rz requirement where applicable
- Approved sample / finish-limit requirement
- Masking, cleaning and protection requirement
- Destination, due date and inspection needs