Hinge is a joint. It is designed to join two 'arms' together while letting them move freely. A lever is when a pivot, load, effort is present. Although hinge itself is not a lever, but taking our biceps as an example, that would be a Class 3 lever.
Physical properties. Tungsten is a hard brittle solid whose color ranges from steel-gray to nearly white. Its melting point is the highest of any metal, 3,410Â°C (6,170Â°F) and its boiling point is about 5,900Â°C (10,600Â°F). Its density is about 19.3 grams per cubic centimeter. Tungsten conducts electrical current very well.
It is very hard, but NOT scratch proof. A Tungsten Carbide ring can only be scratched by a diamond or a product containing the mineral corundum. If you are shopping for a tungsten ring, or mens wedding band, you are better off with one of our Tungsten Carbide Rings and it's lifetime warranty.ungsten rings have been referred to as the Permanently Polished Rings. Tungsten rings will NOT bend. In the event of an emergency, a ring can be removed by a medical professional.