1.Prodsuct Description:
2618 Aluminum Forgings
2618 is a kind of heat-resistant and deformed aluminium alloy which can be strengthened by heat treatment. Its working temperature can be up to 250 ℃. It is used to manufacture long-term working supersonic aircraft structural parts, such as fuselage and wing skin frame, tail wing, parts and components of low-speed aircraft whose working temperature is not higher than 150 ℃, and parts of jet engine whose working temperature is not higher than 250 ℃.
2.Chenmical Composition
The following table shows the chemical composition of Aluminum 2618 alloy.
| Element | Content (%) |
| Aluminum, Al | 93.7 |
| Copper, Cu | 2.3 |
| Magnesium, Mg | 1.6 |
| Iron, Fe | 1.1 |
| Nickel, Ni | 1 |
| Silicon, Si | 0.18 |
| Titanium, Ti | 0.07 |
3.Mechanical Properties
The mechanical properties of the Aluminium / Aluminum 2618 alloy are outlined in the following table.
| Properties | Metric | Imperial |
| Tensile strength | 440 MPa | 63817 psi |
| Yield strength | 370 MPa | 53664 psi |
| Shear strength | 260 MPa | 37709 psi |
| Fatigue strength | 125 MPa | 18130 psi |
| Elastic modulus | 70-80 GPa | 10153-11603 ksi |
| Poisson's ratio | 0.33 | 0.33 |
| Elongation | 0.1 | 0.1 |
4.Physical Properties
The physical properties of the Aluminium / Aluminum 2618 alloy are tabulated below.
| Properties | Metric | Imperial |
| Density | 2.6-2.8 g/cm3 | 0.0939- 0.101 lb/in3 |
| Melting point | 510°C | 950°F |
5.Prodsuct Feature
Aluminium / Aluminum alloys have high ductility and corrosion resistance. At subzero temperatures, their strength can be increased. However, their strength can be reduced at high temperatures of about 200-250°C. Aluminium / Aluminum 2618 alloy is an age hardenable alloy containing magnesium and copper.
Commonly used in the manufacture of aircraft engines.