Best Answer: So used to something it doesn't impress you anymore. Unimpressed, unfazed. A person who is blasÃ© about something would respond Meh.
While cobalt is harder than titanium, and therefore more scratch resistant, tungsten is still the hardest metal currently on the market. In simple terms, although cobalt and tungsten are both extremely hard metals, a tungsten ring will have a higher resistance to scratching. MONARCH-Tungsten Diamond Ring.
Titanium is a very popular aerospace fastener material, since it has the strength of medium alloy steel with approximately half the weight of steel. In addition, it is much more corrosion resistant than alloy steel, requiring no protective coating in many applications.