Fusible alloys have low melting points, usually below 300º F. Many fusible alloys have eutectic compositions. Fusible alloys are used as work holders, electroforming mandrels, tube bending aids, fire sprinkler parts, steam boiler relief plug, resin casting or potting molds, fuse parts, thermostat components, switch parts, thermal management products, lens blocking alloys, and wax pattern injection dies.