![]() However, as previously mentioned, some suppliers use proprietary designations or different industry standards, so it’s best to double-check that you’re on the same page. Surface finishes are commonly identified by standard industry designations based on process routing (not appearance) and are different for sheet (greater than 24” wide) and strip (less than 24” wide). What Are the Different Types of Stainless-Steel Surface Finishes? However, melt mills won't always be able to meet each customer's unique Ra (surface roughness) requirements, and a precision re-roller may be needed. While some finishes (BA and polished) require specialized lines, most mills have these or a third-party processing partner. Most melt mills can produce all sheet and strip finishes. ![]() Several factors can affect surface finish, including the production route, material thickness, the surface finish of the rolls, cleanliness, and mechanical abrading. These finishes range from dull to bright and include special textures that may be mechanically applied for highly specialized applications. Surface finish is the visual appearance of the metal and is created through various processing methods, including rolling, polishing, and blasting. What Is a Stainless-Steel Surface Finish? Keep reading to learn the subtle differences between each finish to understand better how suppliers may differ. It's also important to note that not all suppliers use the same terminology to refer to the same finish. 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. 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. 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. The surface finish of stainless steel affects much more than just its aesthetic - performance, reliability, and other factors can be greatly impacted.
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