The crossword solution for the term 'Steel Gray Metallic Element' is Gallium, a 7 letter word. Gallium is a chemical element with the symbol Ga and atomic number 31. It is in group 13 of the periodic table, and thus has similarities to the other metals of the group, aluminium, indium, and thallium. Gallium is a soft, silvery metal, and it is a brittle solid at low temperatures. It has a low melting point of 29.76 °C (85.57 °F), which is just above room temperature. Gallium is a rare element, and it is found in trace amounts in zinc ores and in bauxite.