2195 aluminium can be alternately referred to by the UNS designation A92195.
Being highly alloyed, it tends to fall on the higher strength and lower corrosion resistance side.
[1] The high strength to weight ratio of this alloy has resulted in its aerospace applications such as the Space Shuttle Super Lightweight external tank.
[1] It is 30 % stronger and 5 % less dense than the 2219 alloy used in the original Space Shuttle external tank.
[1] 2195 is used for the propellant tanks of the Falcon 9 Full Thrust orbital launcher,[2][3] and for the new ULA Vulcan first stage.