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The Ultimate Guide to Stainless Steel Surface Finishes

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date2023-01-30

The surface finish of stainless steel affects much more than just its aesthetic — performance, reliability, and other factors can be greatly impacted.

No matter the application or end-use of the stainless steel, its surface finish should be carefully chosen to best meet the requirements at hand. That's because, in addition to providing the desired visual appeal, the choice of finish affects corrosion resistance, characteristics such as electrical properties, impacts weldability, manufacturing operations, and contributes to various economic considerations.

Some applications, such as superconductor components or flexible metal hoses, demand stainless steel with a specific finish for the end-use product to perform as designed.

It's also important to note that not all suppliers use the same terminology to refer to the same finish. Keep reading to learn the subtle differences between each finish to understand better how suppliers may differ.

What Is a Stainless-Steel Surface Finish?








What Are the Different Types of Stainless-Steel Surface Finishes?





Mill Finishes



NO. 1 FINISH



NO. 2D FINISH



NO. 2B FINISH



BRIGHT ANNEALED (BA) FINISH



Mechanically Polished Finishes



NO. 3 & NO. 4 FINISHES





NO. 6 FINISH



NO. 7 FINISH



NO. 8 FINISH





Other Finishes
CUSTOM FINISHES





TR (TEMPER ROLLED) FINISH



ARCHITECTURAL FINISH



ABEL BLACK



XL BLEND S






What is the Surface Roughness of Stainless Steel?