Table 2.

Advantages and disadvantages of 2^nd generation Al-Li alloys.

2nd generation Al-Li Alloys $(\text{Li}⩾2\text{wt}\%)$ and $(\mathit{Cu}<3\text{wt}\%)$
Advantages	Disadvantages
Lower Density (from 7% to 10%)	Low short-transverse properties and plane stress (Kc) fracture toughness
High modulus of elasticity (from 10% to 15%)	High anisotropy of mechanical properties
Lower fatigue crack growth rates	Delamination issues during manufacturing