Materials And Gauge

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Low Carbon Commercial Steel (formerly A366 CQ). A low cost steel sheet that can be bent 180 deg without cracking. It has a maximum carbon content of .10 for easy welding and forming. 

Aluminum/magnesium alloy that has been strain hardened to 1/4 hard and stabilized. Most suited for forming operations. It is weldable and has very good corrosion resistance, especially salt water. It is a non-heat-treatable alloy. 

The most widely used stainless steel. It has great forming and welding characteristics. It offers great corrosion resistance to atmospheric and many chemical corrodents. The #3 finish is an intermediate polish; the brushed finish is around 100/120 grit. 

 G90 is cold rolled steel that is already galvanized top and bottom with a coating of .90oz/ft^2