Corrosion Resistance: Excellent, especially in marine and chemical environments.

Formability: Good, allowing it to be easily shaped and fabricated.

Weldability: Good, suitable for various welding techniques.

Strength: Moderate, not as high as some other aluminum alloys but sufficient for many applications.

Common Applications:

Marine: Boat hulls, decks, and other marine structures.

Automotive: Body panels, fuel tanks, and other components requiring good corrosion resistance.

Construction: Roofing, siding, and architectural applications.

Chemical Industry: Tanks, piping, and other equipment exposed to corrosive substances.

General Engineering: Components requiring a balance of strength, formability, and corrosion resistance.

5251 aluminum alloy is valued for its durability and resistance to environmental factors, making it suitable for a wide range of industrial and commercial applications.