Sold By the Ingot ie. 1 Quantity = 1/4 Pounds or 4 ounces Field's metal, or Field's alloy (named after Simon Quellen Field), is a fusible alloy that becomes liquid at approximately 62 °C (144 °F). It is a eutectic alloy of bismuth, indium, and tin, with the following percentages by weight: 32.5% Bismuth, 51% Indium, 16.5% Tin. As it contains no lead nor cadmium, it is a non-toxic alternative to Wood's metal. It is used for die casting and easy prototyping.