Brushed or dull polished metal is metal with a unidirectional satin finish.
A brushed finish is susceptible to damage. Brushed finishes also typically have a detrimental effect on corrosionresistance. In particular the brushed texture limits the ability of fluid to bead on the material surface. In the case of stainless steel the grooves of the finish can accumulate chloride ions which break down the chromium oxidepassivation layer, enabling rusting to occur.
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 hanging at the door both good for long time use and visual beauty.
Our signs normally use 5052 H38 for US and Australia market
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
Other aluminum alloy also could be used if required.