Today’s pet peeve: when a thing in a story is described as super-strong because it’s made of titanium.
(To elaborate, titanium is actually weaker than steel by a fair margin. Its primary virtue as a structural material is that it’s extraordinarily strong for a low-density metal; or, in other words, it’s very light relative to how much structural strength it brings to the table. That’s why it’s used in aerospace applications, where every ounce counts. Strong for its weight doesn’t mean strong in absolute terms, though. You absolutely wouldn’t make personal armour out of the stuff - that’d be like making armour out of aluminum.)