Metal Polishing Specifications

Metal Polishing Specifications

#3 Finish –

Grain finish. Also called Grinding, Roughing or Rough Grinding
Very coarse finish. The material is polished to a uniform finish between 60 and 180 grit.

#4 Architectural Finish –

Also called Brushed, Directional or Satin Finish
A #4 Architectural Finish is characterized by fine polishing grit lines that are uniform and
directional in appearance. It is produced by polishing the metal with a 120 – 180 grit belt or
wheel finish and then softened with an 80 – 120 grit greaseless compound or a medium non
woven abrasive belt or pad.

#4 Dairy or Sanitary Finish –

This finish is commonly used for the medical and food industry – almost exclusively used on
stainless steel. Great care should be taken in removing the surface defects in the metal – like
pits – that could allow bacteria to grow. This finish is produced by polishing with a 180 – 240
grit belt or wheel finish softened with 120 – 240 grit greaseless compound or a fine non woven
abrasive belt or pad.

Finish Cross Reference Chart

GritRARMSTrizact
30-250-
40-200-
60145150-
8071125-
1006169-
1205258A160
1504247A130
1803034A110
2202022A90
2401517A65
3201214A45
500+<3<3A35
1200--A20
1500--A10