Brushed or dull polished metal is metal with a unidirectional satin finish.
It is produced by polishing the metal with a 120–180 grit belt or wheel then softening with an 80–120 grit grease-less compound or a medium non-woven abrasive belt or pad.
Brushing gives metal a distinctive look, as it retains some but not all of its metallic lustre and is given a pattern of very fine lines parallel to the brushing direction. For this reason, it is commonly used for signs to better surface to paste the reflective film on.
Make it both side brushed could be as customized
Our signs normally use 5052 H38 for US and Australia market
Aluminum details :
5052 Temper H38 Chemical Composition Limits (%)
Magnesium gives this alloy its enhanced corrosion resistance, work ability, strength, and weld ability. Typical uses include aircraft fuel tanks, electronic mounting plates and panels, fan blades, refrigeration liners, storm shutters, and utensils.
Mechanical Property Limits