What material is typically used in the construction of aircraft engine firewalls?

The typical material used in the construction of aircraft engine firewalls is stainless steel. The primary function of the firewall is to provide a critical barrier between the engine and the surrounding components of the aircraft, particularly in the event of a fire or extreme heat. Stainless steel is an ideal choice for this application due to its excellent resistance to high temperatures, corrosion, and mechanical stress, which are all prevalent in the environment of an aircraft engine.

Stainless steel's durability ensures that it can withstand the potential impact of flames and heat, providing structural integrity and safety. In the aviation industry, where failure can have catastrophic consequences, the material selected needs to offer reliability and performance under demanding conditions. This makes stainless steel a preferred material over others that may not provide the same level of protection or durability.