Aluminum is widely used in the field of transportation. The excellent properties of aluminum alloys such as lightweight, high strength, and corrosion resistance make it an important material in the field of transportation in the future.

1. Body material: The lightweight and high-strength properties of aluminum alloy make it one of the ideal materials for manufacturing transportation vehicles such as cars, airplanes, and trains. The use of aluminum alloy can reduce the weight of the car body, improve the strength and corrosion resistance of the car body, and reduce fuel consumption and carbon emissions.

2. Engine parts: Aluminum alloys are also widely used in engine parts of transportation vehicles, such as engine cylinder heads, crankcases, fan blades, etc. The high strength, high temperature resistance and good thermal conductivity of aluminum alloy make it one of the ideal materials for manufacturing engine parts.

3. Wheel hub and braking system: The high strength, corrosion resistance and good thermal conductivity of aluminum alloy make it one of the ideal materials for manufacturing vehicle hubs and braking systems. Aluminum alloy wheels are lighter than traditional steel wheels, which can reduce the resistance of the vehicle when driving and improve fuel economy.

4. Ship structure: Aluminum alloy has good corrosion resistance and strength, so it is widely used in the shipbuilding industry. Aluminum alloy ship structures are lighter than traditional steel structures, which can reduce the ship's dead weight and improve the ship's speed and fuel economy.