An aluminum manifold serves as a distribution fitting that splits a single input into multiple outputs or channels. For example, in automotive engines, particularly in older designs, aluminum manifolds represent the components like intake manifolds or exhaust manifolds. An intake manifold distributes air-fuel mixture to the engine cylinders, while an exhaust manifold directs exhaust gases away from the engine. These manifolds are vital for engine performance.
Aluminum manifolds are generally not recommended for high-temperature applications.
While aluminum is lightweight and corrosion-resistant, it has a lower melting point compared to other metals like steel or brass. Most aluminum alloys used in manifold construction have melting points below typical high-temperature requirements. In applications involving extreme heat, such as those found in certain industrial processes or engine components, aluminum manifolds may warp, deform, or even melt.
For high-temperature applications, it's advisable to choose materials like stainless steel or specialized alloys designed to withstand the elevated temperatures and maintain structural integrity and safety.