Q: Why is Aluminum 7075 often used for aircraft?
A: There are many grades of aluminum bolts but those categorized under grade 7075 are specifically used for aerospace and other high stress structural applications that require a combination of strength and extreme light weight.
Grade 7075 can be tempered to different conditions, each providing different levels of strength. Among these tempers is 7075-T6, which is the strongest. Aluminum 7075-T6 bolts are 1/3 the weight of steel and can offer nearly double the strength-to-weight ratio of grade 2 titanium. In addition, they offer good plasticity and high fracture toughness, making it ideal for stress/strain resistance.