2618 aluminum forging is a high-strength aluminum alloy with excellent mechanical properties and is widely used in aerospace, automotive, and industrial applications. Composed of primarily aluminum, the 2618 forging also contains small amounts of copper, magnesium, iron, manganese, and silicon, which together give it superior strength, toughness, and resistance to fatigue.
Chemical Composition
Compared to other popular aluminum alloys, such as 7075 and 6061, 2618 has a higher copper content, which enhances its corrosion resistance and thermal conductivity. It also has a higher magnesium content, which contributes to its overall strength and toughness. The iron and manganese content in 2618 improve its weldability and machinability.
Si 0.25 max
Fe 0.9 – 1.3
Cu 1.9 – 2.7
Mg 1.3 – 1.8
Ni 0.9 – 1.2
Ti 0.04 – 0.1
Al Balance
Remainder Each 0.05 max
Remainder Total 0.15 max
Mechanical Properties
The mechanical properties of 2618 aluminum forging are impressive, with a tensile strength of over 600 MPa, a yield strength of over 400 MPa, and a hardness of 120 HB. This makes it ideal for high-stress applications, such as aircraft engine components and high-performance racing parts. The fatigue resistance of 2618 is also noteworthy, with a fatigue strength of up to 170 MPa.
Applications of 2618 aluminum forgings
2618 aluminum forging's versatile properties make it a go-to choice for a broad range of applications. In the aerospace industry, it is utilized for turbine compressor components, connecting rods, and piston heads. It is also used in the automotive industry for high-performance engine components, such as piston heads, connecting rods, and cranks. Furthermore, 2618 is used in industrial applications for high-pressure vessels and oil and gas drilling components.
The quality of 2618 aluminum forging is crucial and must meet the aerospace industry's high standards. Manufacturers use various techniques, such as heat treatment and surface finishing, to ensure the forging's performance and durability.
In conclusion, 2618 aluminum forging is a high-performing, durable material with desirable chemical and mechanical properties. Its applications span across several industries, including aerospace, automotive, and industrial. With excellent resistance to fatigue, corrosion, and thermal conductivity, 2618 is an alloy perfect for high-stress applications that require long-term durability.