The element copper is added to 2014 アルミニウム合金. As it is called hard molybdenum, it has high strength、good shavings and processing properties.
2014 aluminum sheet is usually used in some occasions with high strength and hardness (including heat). 例えば, heavy forgings, plate and extrusion materials are used for aircraft structures, the first stage fuel tank of multistage rocket and spacecraft parts, 車輪, truck frame and suspension parts.