>>2694328Titanium, Ti
The holy grail of hollywood metallurgy, this metal is often treated as the Superman of materials. In reality it's a lot more like Xander Harris - reliable and useful, but it's not magic, and rarely works well on its own.
Pure titanium has a tensile strength - basically, the maximum pulling force per surface area a specimen can withstand - of about 434 MPa. For comparison, Al-Cu-Mg alloys (dural) typically reach 450 MPa, and medium carbon steels go up to 1200 MPa. As such, designing a containment cell with titanium walls makes about as much sense as importing a Trabant via airlift would make for an American - you aren't getting the value for your money, and the only people it'll impress are those with no idea what you are talking about.
Titanium alloys have far better properties in this respect, matching steels, but with a far lower density.3 As such, it is well suited for aerospace applications, but given that mass is rarely an issue in containment cell design, steel is most likely a better option.
There's a couple of cases where titanium plating on the inside of a containment cell would work well - titanium is resistant to most dilute acids and chemical corrosive agents, and has a high melting point - around 1900 K.4 Therefore, using such designs to contain heat-based entities, or objects that chemically attack their surroundings works well as an alternative to ceramic plating in cases where the latter's mechanical properties (low fracture toughness for one) might pose a problem.