Which finish number indicates a mirror finish?

A finish number of 8 signifies a mirror finish in the context of sheet metal. This classification reflects the highest level of polish and smoothness achievable on a metal surface. In practical terms, a mirror finish means that the surface is highly reflective, allowing it to shine brightly and show clear reflections, similar to glass. This finish is often desired in applications where aesthetics are important, such as decorative features or high-end appliances.

The other finish numbers represent different levels of smoothing and polishing, but none achieve the same reflective quality as a mirror finish. For instance, a finish number of 6 indicates a higher level of polish than rougher finishes but falls short of the brilliant reflectivity characterized by a finish number of 8. In industrial and design applications, recognizing the significance of these finish numbers helps professionals select the appropriate surface quality for their specific needs.