Description

MCP 47 is a low melting alloy also known as Metspec 117. It has a melting point of 117 °F (47 °C). MCP 47 is used in the optical industry for lens blocking. It can also be used for work-holding where low temperatures are required, fusible safety devices, and proof casting. Low melting alloys, also called fusible alloys, have a composition that allows the metal to form into a liquid or semi-liquid state at low temperatures and then re-solidify. They are ideal for joining or casting parts at temperatures lower than 300 degrees. Some technical information about MCP 47 is: *Melting point - solidus 117 °F (47 °C) *Melting point - liquidus 117 °F (47 °C) *Short-term tensile strength lbs/sq.in. 5400 *Yield temperature 117 *Weight lbs/cu.in 0.32 *Brinnell hardness no. (500 kg) 12 *Growth/shrinkage - time after casting: after 2 mi.: 0.0005 *after 1 hour: -0.0001