Aluminium is one of the most widely used metals in manufacturing, particularly in the aviation and aerospace industries. Two popular types of aluminium are 2618 and 2024. But what are the differences between the two, and which should you choose for your project? In this post, we’ll compare aluminium 2618 and 2024 and help you determine which is the best fit for your needs.
What is Aluminium 2618?
Aluminium 2618 is a high-strength alloy widely used in aerospace due to its remarkable durability and lightweight. This alloy is designed to withstand high stress and extreme temperatures, making it the go-to choice for manufacturing critical components such as engine parts, rocket frames, and aircraft wings. What sets Aluminium 2618 apart from other alloys is its superior corrosion resistance and ability to retain its mechanical properties even at elevated temperatures. As a result, it is a popular choice for applications that demand high performance and reliability. Whether launching a satellite into orbit or transporting passengers across continents, Aluminium 2618 has proven reliable and efficient.
What is Aluminium 2024?
Aluminium 2024 is a highly versatile and popular aerospace alloy that has gained widespread use in aircraft manufacturing. This alloy comprises a combination of copper, iron, magnesium, manganese, silicon, and zinc, which gives it remarkable properties like high strength, good fatigue performance, and excellent machinability. The 2024 alloy is known for its excellent corrosion resistance and can withstand harsh environmental conditions at high altitudes. With these characteristics, it’s no surprise that the 2024 aluminium alloy is often used in wing and fuselage structures and many other aircraft components. It’s no wonder this alloy remains the top choice for manufacturers.
Difference Between Aluminium 2618 and Aluminium 2024
Aluminium 2618 contains copper, magnesium and silicon, whereas Aluminium 2024 is a copper-free alloy largely consisting of aluminium, manganese and magnesium. While both alloys are known for good strength-to-weight ratio, and machinability in the annealed state, Aluminium 2618 is typically used in high-temperature applications due to its superior heat resistance compared to 2024.
Composition
The main difference between aluminium 2618 and 2024 is their composition. Aluminium 2618 contains between 5.5% and 6.5% copper, whereas 2024 aluminium contains between 3.8% and 4.9% copper. This difference in copper content gives both metals unique properties that make them suitable for specific applications. Aluminium 2618 is much stronger than 2024, making it ideal for high-stress applications that require strength and durability. On the other hand, 2024 aluminium is more malleable, making it a better material for manufacturing parts that require shaping and forming.
Strength and Toughness
As mentioned above, aluminium 2618 is stronger than 2024, with a tensile strength of 570 MPa compared to 414 MPa for 2024 aluminium. In addition to strength, 2618 has superior toughness, making it more resistant to breaking and deformation. This strength and toughness make it the preferred option for manufacturing high-stress parts such as connecting rods, pistons, and other heavy-duty components.
Machinability
Another factor to consider when choosing between Aluminium 2618 and 2024 is machinability. While both metals are readily machinable, 2618 is slightly more difficult to work with due to its strength and toughness. On the other hand, 2024 is more malleable and easier to shape and form, making it a better option for manufacturing parts that require intricate machining and detailing.
Applications
Finally, the choice between aluminium 2618 and 2024 will depend on the specific application you have in mind. Aluminium 2618 is commonly used in the aerospace industry, particularly in constructing aircraft engines and other high-stress components that require strength and durability. 2024 aluminium, on the other hand, is more commonly used in constructing aircraft structures, such as wings and fuselages, as well as in other general manufacturing applications, such as bicycle frames and automotive parts.
Conclusion:
Aluminium is a versatile and durable metal that is widely used in manufacturing. When choosing between Aluminum 2618 and 2024, the decision will ultimately come down to the specific requirements of your project. Aluminium 2618 is stronger and tougher, making it ideal for high-stress applications that require durability and strength. On the other hand, 2024 aluminium is more malleable, making it a better option for parts that require intricate machining and detailing. Considering these differences will help you choose the best aluminium for your project.
