If you’ve ever looked at stainless steel and noticed a consistent grain running across the surface, you’ve probably seen a brushed finish.
A #4 brushed stainless finish is a common finish for stainless steel sheet. It gives the surface a uniform grain and a softer look than polished stainless steel.
The direction of that grain is important, especially when you’re fabricating multiple stainless steel parts that will be seen together.
What Is a #4 Brushed Finish?
A #4 finish is a mechanically produced stainless steel surface with a uniform, directional texture. The grain runs in one direction across the sheet, giving the surface its familiar brushed look. It is not highly reflective like a mirror-polished finish.
The exact look can vary depending on how the finish is produced and specified. For that reason, simply calling out “brushed stainless” may not provide all the information needed for a finished part.
If the surface needs to look a certain way, it’s better to specify the finish rather than leave it open to interpretation.
Why Does Grain Direction Matter?
One of the defining characteristics of a #4 finish is its directional grain.
That direction becomes noticeable when multiple pieces come together, especially on larger panels, enclosures, doors, or other exposed components. If adjacent pieces have different grain directions, they can look noticeably different even when they’re made from the same stainless steel.
For parts that will be seen, grain direction should be considered during the design and fabrication process.
This is especially important when several pieces are assembled into one finished product. Keeping the grain running consistently can give the completed assembly a more uniform look.
Where Is #4 Brushed Stainless Commonly Used?
#4 stainless is commonly used where the material needs to hold up well and the surface will be exposed.
You may see it used for:
- Food service equipment
- Commercial and architectural components
- Appliance parts
- Panels and enclosures
- Decorative or exposed stainless steel components
A brushed finish can be a good fit when you want a clean, consistent stainless surface without the reflectivity of polished stainless.
#4 Brushed vs. Polished Stainless
Not all stainless steel finishes are intended to look the same.
A brushed #4 finish has a directional texture and a relatively low-reflective surface. Polished finishes can be much more reflective and have a different visual character.
#4 Brushed Finishing at Elliott Metal Works
Elliott Metal Works offers in-house #4 brushed finishing on stainless steel flat sheet.
If you’re ordering stainless steel parts that require a #4 finish, let us know when you submit your drawing or request a quote.
It’s also helpful to identify the desired grain direction when it matters to the finished part.
Specify the Finish Before Fabrication
A stainless steel part can be dimensionally correct and still not look the way you expected if the surface finish wasn’t clearly specified.
When you’re ordering stainless steel fabrication, include the material grade, thickness, dimensions, and required finish in your drawing or quote request.
If a #4 brushed finish is part of the requirement, specifying it from the beginning helps ensure everyone is working from the same requirements.
Have a stainless steel part that needs a #4 brushed finish? Send us your drawing or sketch for a quote.
