Aircraft electrical junction boxes in a fire zone are generally made from what material?

Aircraft electrical junction boxes located in a fire zone are generally made from stainless steel due to its superior properties that enhance safety and reliability in high-temperature environments. Stainless steel has a high melting point, making it resistant to the extreme conditions that can occur during a fire. Additionally, this material offers excellent corrosion resistance and strength, which are crucial for protecting electrical connections and components in potentially hazardous areas.

Using a material such as stainless steel also provides better structural integrity compared to other materials that might not withstand heat or flames, thus ensuring the safety and continued operation of critical electrical systems in the aircraft. The other materials listed do not possess the same level of fire resistance and durability required in fire-prone environments, making stainless steel the preferred choice for these applications.