Tungsten and volfram name the same metal. Atomic number 74. Chemical symbol W. It melts at 3,422 °C—the highest of any metal. Its density reaches 19.25 g/cm³, 1.7 times heavier
A wrench turns nuts and bolts. Choose the wrong size or type and you round the fastener in seconds. Mechanics see this error in over half of failed DIY repairs.