Sold by the Ingot, may be shipped as either a square or rectangular ingot. An ingot of Low-Melting 158F Bismuth Based Alloy will average approximately 1 pound. Melts at approximately 158 degrees F. Low-Melting 158F Bismuth Based Alloy is used to anchor bushings in drill jigs, internal or external support of delicate parts for machining, cores for spinning, fusible mandrels in filament winding, fiberglass lamination, drop hammer and embossing dies, tube bending filler (up to 1 3/4" diameter), as a heat transfer medium in processing plastics, chemicals, etc. (up to 255 Degrees F), and shielding blocks for nuclear medicine. Wood's metal, named for American metallurgist B. Wood, is also known as Lipowitz's alloy or by the commercial names cerrobend, bendalloy or pewtalloy