Red Brass: It is light red in color and files accordingly. Red brass is used more in industrial situations and larger valves.
Semi Red Brass: It is also light red in color. It is used in gears, meters, and flush valves.
Aluminum Bronze: It is yellow and red in color. Although it is non-magnetic it may slightly draw to a magnet. Bronze can be found in plaques, gears, bearings, and urns.