Titanium

While pure Titanium is highly useful, it is most frequently alloyed with elements like Iron, Aluminium, Vanadium and Molybdenum to produce ultra-high-strength, lightweight super-materials. Its key applications include:

• Aerospace & Defence: The sky is not the limit for Titanium, but it is the starting line. It is heavily utilised in jet engine turbines, aircraft frames, missiles and spacecraft, where shedding weight without compromising structural strength is a matter of life and death. 
• Medical & Dental Implants: Titanium is incredibly biocompatible, meaning it’s non-toxic and is not rejected by the human body. Basically, it’s the gold standard for orthopaedic implants (like hip and knee replacements), medical prostheses and dental implants. And interestingly, human bone can physically grow into the rough surface of a titanium implant (A.K.A. osseointegration). 
• Industrial Processing: As it’s nearly immune to rust and chemical degradation, Titanium is the material of choice for harsh industrial environments. It is widely used in desalination plants, chemical and petrochemical refineries, and the highly corrosive pulp and paper industry. 
• Automotive & Consumer Goods: The combination of durability, lightweighting and a premium aesthetic makes Titanium popular in high-end sporting goods (e.g. golf clubs and bicycle frames), premium jewellery, and increasingly, the chassis of flagship mobile phones and high-performance automotive exhausts.