Satin Metal Finish
#2B/Mill Finish – The unpolished look of the cold rolled material immediately after milling. This finish has some luster, but is not reflective. #2B/Mill Finish is recommended when appearance is not a factor in the application of the metal.
Bright Annealed Finish – A reflective, mirrorlike appearance with some imperfections and cloudiness. Annealed finishes are accomplished by heat-treating the metal in a furnace and allowing it to cool slowly. This is a lower-cost option.
#3 Satin Finish – A coarse finish. #3 Satin Finish is polished using a wide belt machine with the finish measuring between a 60-80 Grit and 50 RA.
#4 Satin Finish – A fine polishing grit line that is uniform and directional. While similar to #3, #4’s final polishing is done using a higher grit of 120-180 and 32 RA Max producing a smoother, more refined finish. This finish is commonly used for stainless steel products.
#4 Long-Grain Finish – Grain pattern with a continuous grit line. This finish begins with the same initial process of #4 standard finish, with the grain running continuously along the length of the product. It is commonly referred to as a “hairline” finish.
#4 Cross-Grain Finish – Begins with the same initial process of a standard #4 finish with a change of direction of the grain resulting in a horizontal direction.
#4 Non-Directional Satin Finish – Begins with the same initial process of a standard #4 finish, but is completed so that the grit is in a random orbital finish.
#6 Satin Finish – Results in an even smoother appearance than #4 finish. After initial polishing, the final finish is achieved by polishing with a 240-320 grit abrasive belt and measures a 20 RA max. Used frequently for 304 Stainless Steel.
#6 Long-Grain Finish – Known as the hairline finish. This finish begins with the same initial procedure with grain running continuously along the length of the product.
#6 Cross-Grain Finish – Grain running in a horizontal direction. This finish is the same initial process of #6 standard.
#6 Non-Directional Satin Finish – Another variant of the #6 finish, this is a random orbital finish.