6061 Aluminum Flat Bar is a general purpose steel for applications requiring added strength and superior tensile properties to mild steel specifications. It has a very hard surface with a strong core and able to retain a high degree of toughness. It can be used as a non-deforming tool steel which can be hardened at relatively low temperatures. This bar product has a smooth surface finish is machinable and displays excellent mechanical properties. 6061 Aluminum Flat Bar is an extruded solid aluminum bar that is versatile, easy to work with and has a wide range of applications.