Commercially Pure Titanium Grade 4 is the highest strength pure unalloyed Titanium with high oxygen and extra high strength. Grade 4 displays the highest strength of all the unalloyed CP grades. It combines excellent corrosion resistance with good formability and weldability. Mainly used in hydraulic and instrumentation tubing. Generally chosen for its corrosion resistance in a variety of chemical process equipment as well as marine and airframe applications. It can be used for parts requiring strength up to 400 ° F and oxidation resistance to 600 ° F.