What material is commonly used in the construction of exhaust ducts?

Steel is commonly used in the construction of exhaust ducts due to its durability, strength, and resistance to high temperatures. Exhaust ducts need to safely carry gases and heat away from appliances, and steel effectively withstands the corrosive elements often found in exhaust systems, such as moisture and acidic substances. Additionally, steel is less susceptible to damage compared to other materials, ensuring long-lasting performance.

Other materials, such as plastic, wood, and glass, may not provide the necessary strength or heat resistance required for exhaust duct applications. Plastic can deform or melt under high temperatures, wood is generally not suitable due to its flammability and susceptibility to decay, and glass can be brittle, making it an impractical choice for environments where ducts are subject to impact or pressure changes. Thus, steel is the optimal choice for ensuring effective and safe exhaust duct construction.