The material typically used for engine radiators is made of what?

Engine radiators are primarily made from materials that offer good thermal conductivity, corrosion resistance, and adequate strength. Yellow brass is an alloy that consists primarily of copper and zinc, which provides a good balance of these properties. Its favorable thermal conductivity allows for efficient heat transfer, which is essential in radiator applications.

While the other brass options mentioned do come with varying compositions and specific advantages, they often do not match the thermal performance and manufacturing characteristics needed for engine radiators as effectively as yellow brass. For instance, silicon brass is used in some specialty applications for its better corrosion resistance and workability, but it is less common in radiator manufacturing where excellent heat dissipation is paramount. Admiralty brass and navy brass, while offering some corrosion resistance, are typically used in marine applications or for specific plumbing tasks, not specifically for engine cooling systems. Therefore, yellow brass remains the conventional choice for engine radiators due to its effective combination of properties suitable for the demanding conditions they must endure.