Question: what materials were originally used to make the jet engine?
Answer: Fan: Aluminum, titanium, or stainless steel.
Compressor: Nickel-, cobalt-, or iron-based alloys. ... 
Combustion chamber: Superalloys with refractory metals such as tungsten, molybdenum, niobium, tantalum. ... 
Turbine: Nickel-based superalloy, outside air is circulated through channels inside of the turbine blades.