W Tungsten Powder of refractory metals for making refractory steel CAS 7440-33-7 Brief Description of Tungsten Powder Tungsten, or wolfram, is a chemical element with symbol W and atomic number 74. Tungsten is ... Read More
CAS 7440-03-1 Nb Niobium Refractory Metal Powder used in various superconducting materials Brief Description of Niobium Powder Niobium, formerly known as columbium, is a chemical element with symbol Nb ... Read More