What is the strongest metal ever?

Certainly not tungsten carbide. That stuff is fragile, and only useful for its ability to stand up to high temperatures.

Oh okay, but what is the strongest metal ever? Not titanium? Or?

Don't know and don't feel like using google. Do keep in mind that there different measures of strength, like tensile, bending, compression, and shear.

Heavy

Really? It seems strong enough when used in armor-piercing bullets.

It's very hard and very dense. If that's your definition of strong, it's a winner.

Extreme hardness without being brittle is one of the two critical features of an armor piercing bullet. When the bullet strikes a surface at extreme velocity, you do not want the bullet to deform or shatter. The harder your bullet is, the faster it can go without deforming on impact.

The other critical feature is enough velocity so that when a non-deforming bullet strikes a surface, that surface does deform, allowing the bullet to punch through.