Functional materials are engineering materials based on physical properties, i.e. materials with special properties in electricity, magnetism, sound, light, heat, etc., or materials with special functions under their action.

1. Titanium and titanium alloy products have good corrosion resistance, heat resistance, low temperature toughness and fracture toughness, so they are mostly used as aircraft engine parts. Titanium alloys can also be used as fuel and oxidant storage tanks and high-pressure containers.2. in the petro