Number 4 Stainless Steel

Number 4 finish stainless steel—often referred to as a satin or brushed finish—is one of the most widely used finishes across commercial and architectural applications. It offers a clean, consistent appearance with fine, directional grain lines that soften reflectivity without sacrificing the metal’s natural brightness.

At Polished Metals, we produce #4 finish stainless steel with a level of precision and consistency that meets the demands of various projects and industries. With decades of experience in metal finishing and a deep inventory of stainless steel products, our team ensures each piece meets exact specifications—whether it’s for architectural panels, food-grade surfaces, or custom fabrication work. Reach out today for a quote.

stainless steel in number 4 finish with a seashell to illustrate the visual characteristics of the finish

About Number 4 Finish Stainless Steel

Number 4 finish is a mechanically polished surface characterized by its uniform, linear grain. It falls in the middle of the finish spectrum—more refined than a coarse mill finish but less reflective than a mirror polish. The result is a smooth, satin-like appearance that diffuses light and minimizes the visibility of fingerprints, scratches, and wear over time.

This finish is most commonly applied to stainless steel, particularly grades like 304 and 316, where corrosion resistance and cleanability are essential. Its versatility makes it suitable for both decorative and functional applications, from interior design elements to heavy-use industrial surfaces.

What Is a Number 4 Finish?

A number 4 finish is created through a controlled abrasive process that uses progressively finer grit belts or pads to produce a consistent, unidirectional grain. The process removes surface imperfections while establishing the signature brushed look associated with this finish.

Learn more about this finish, use cases, and available metals at this page.

Properties of #4 Stainless Steel

Number 4 finish stainless steel is valued for how well it balances form and function. Its properties make it suitable for environments where both appearance and performance are important.

Consistent satin appearance with a fine, linear grain
Reduced glare compared to polished or mirror finishes
Helps conceal fingerprints, smudges, and minor surface scratches
Maintains the corrosion resistance of the underlying stainless steel
Smooth surface that is easier to clean and maintain
Durable enough for high-traffic and high-contact applications

Because the finish is directional, it’s important that fabrication and installation maintain grain alignment for a cohesive final look—something Polished Metals carefully manages throughout production.

Use Cases

Number 4 finish stainless steel is used across a wide range of industries due to its adaptability and clean aesthetic.

In architecture and design, it’s commonly specified for wall panels, elevator interiors, column covers, and trim elements where a refined but understated finish is preferred. In commercial environments such as restaurants and healthcare facilities, it’s used for countertops, backsplashes, and equipment surfaces thanks to its cleanability and resistance to wear.

Industrial and manufacturing applications also benefit from this finish, particularly where durability and corrosion resistance are required without the need for a highly reflective surface. It’s also a popular choice for appliances and fixtures, offering a professional look that holds up under regular use.

Reach Out to Polished Metals Today!

Polished Metals is known throughout the world for our best-in-class metal finishing services. Our expansive inventory of metal types, the quality and consistency of our finishes, and the level of customer service from order to delivery is unsurpassed in the industry.

You know you are working with the best when you work with the Polished Metals team. If you have questions about a particular metal type, product availability, or metal finish, please reach out to us.

Testimonials

“Plain and simple, we could not do what we do nearly as well without the consistent quality and support that we get from the entire team at Polished Metals Ltd. Your metal is top-notch, and the service that we get from David and Mary is even better! Our team has always enjoyed working with you guys, and we look forward to continuing our relationship for years to come.”
Architecture and Design

“I have worked with Polished Metals periodically throughout my 18 year carrier in the custom metal fabrication industry. They have been a consistent, reliable vendor for me both in regards to informational needs and as a product supplier. Quotes are often required to be turned around by me very quickly and Bob Gunther at Polished Metals sends me pricing and lead-times extremely fast. Our product arrives when we are told it will and if there are any delays (which does not happen often) we are informed ahead of time, which is appreciated. Product arrives undamaged and is of good quality 99% of the time and when there is an issue with damage or defects Polished Metals responds quickly and makes things right quickly. I highly suggest using Polished Metals for your quality metal needs.”
Architecture and Design

“Mary, It has been a pleasure working with you over several years. A fabricator is only as good as his suppliers, that is why we worked with you. You are one of the best in the industry.”
Architecture and Design

“When it comes to metal companies there are loads of companies that talk a good game, but Jay Isherwood from Polished Metals helps you make it happen. Polished Metals has offered us a great service with unparalleled consistency and amazing quality control. He has given us the confidence we needed to make an accurate timetable with our clients and each time, delivered as promised. Looking forward to the next project and working together again, thank you.”
Architecture and Design

“Our company produces and installs complex high-end projects in New York City. Procuring the materials for projects like the Edge Observation Deck at Hudson Yards can be extremely involved. Polished Metals exceeded our requirements for all our architectural metal needs on this and many other demanding NYC projects. Over the years they have provided everything from raw material to complex fabricated components for our installations. The key to our relationship has been outstanding communication and trust. As anyone in the construction industry knows things can change in an instant, how a company responds to those changes is critical. Mary and the whole team at Polished Metals have shown that they not only respond but have come through for us time and again.”
Architecture and Design

“Working with Polished Metals is always a pleasurable and exceptionally professional experience. Their range of capability is nearly limitless and in the fabrication industry they are extremely helpful in making sure a top quality product is delivered every single time. The sales team is nothing short of professional, they are very knowledgeable of the industry and they deliver top shelf service every time. Material range is everything we could need and they are surely a top choice when it comes to purchasing material for a project, large or small. If you want a top quality product and an enjoyable experience in receiving it, choose Polished Metals!”
Architecture and Design

“Polished Metals has been a Preferred Vendor of ours for over a decade. Our corporate philosophy dictates that we have Alternate or Secondary Supplier for all product, with the exception of #8 Mirror Polished Stainless Steel. We’ve tried to qualify other suppliers to no avail, as none of them can compete in any of the critical categories. The Customer Support provided by Bob Gunther cannot be replicated, pricing is fair, delivery is always on-time and quality is fantastic. As the Corporate Purchasing Manager for the last 7 years, not once have I had a negative experience with Polished Metals. I can’t say enough good things about them.”
Architecture and Design