What material must engine fuel containers be constructed of, if they are to be power coated or painted to minimize corrosion?

Engine fuel containers, when intended to be powder-coated or painted for corrosion resistance, must be constructed from steel. Steel is commonly used for fuel containers due to its strength and durability, making it well-suited for containing liquids under pressure and in various environmental conditions. The powder-coating process involves applying a protective layer that not only minimizes corrosion but also enhances the overall longevity of the container.

Steel provides a robust substrate for the powder coating, which adheres very well to it, ensuring that the protective layer remains intact. This prevents moisture and corrosive elements from contacting the metal surface, significantly extending the lifespan of the fuel container.

Other materials, while they may have their own advantages, do not provide the same combination of strength and compatibility with powder-coating as steel. For example, aluminum is lightweight and resistant to rust, but its softer nature may not be ideal for certain applications requiring durability. Plastic can be used for some fuel applications, but it generally does not withstand high-pressure situations and can degrade over time when exposed to UV light or certain chemicals. Copper, while corrosion-resistant, is not typically used for large fuel containers due to its high cost and other material advantages in application suitability. Thus, steel's properties make it the preferred material for containers