Steelbank Stainless - Aluminium - Finish Types/Definitions

Finish Types/Definitions

The majority of our material is in a standard mill finish, but we are able to offer some others:
No.4 finish:
Commonly referred to a brushed finish, it is a linearly textured finish on 1 side or both sides of the sheet achieved by passing the material through a series of polishing belts. It is also referred to as satin finish.
Anodising quality:
Surface finish is no different from that of a standard mill finish, but the material has gone through a superior process in order to be able to anodise evenly.
This material has been through an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The end result is a hard, natural or coloured oxide layer mainly for decorative purposes. However, it also adds corrosion resistance against pitting as well as wear resistance and electrical insulation.