Tin 99.9% pure ingot. Each ingot measures about 3/4" x 1.5" x 4" and weighs approximately 1 pound. (+/- .1 pound). This smaller sized ingot makes it much easier for you to melt and use! Physical Information Atomic Number: 50 Relative Atomic Mass (12C=12.000): 118.71 Melting Point: 450F Boiling Point: 4100F Density: 7.29 Weight Lb/in3: 0.2633