Wood's metal is a fusible alloy that becomes liquid at approximately 70 °C (158 °F). It is a eutectic alloy of bismuth, lead, tin, and cadmium with the following percentages by weight: 50% Bi, 26.7% Pb, 13.3% Sn, 10% Cd. Some of its commercial names are Cerrobend, Bendalloy, and pewtalloy. Bearmetal-158, an alloy marketed by a model train vendor, is considered by some to be another name. A Fusible alloy, usually eutectic alloy is capable of being fused, as well as being liquefied by heat. ... An alloy is a combination, either in solution or compound, of two or more elements, at least one of which is a metal, and where the resulting material has metallic properties. ... A degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701-1744), who first proposed a similar system in 1742. ... A eutectic or eutectic mixture is a mixture of two or more elements which has a lower melting point than any of its constituents. ... General Name, Symbol, Number bismuth, Bi, 83 Chemical series poor metals Group, Period, Block 15, 6, p Appearance lustrous reddish white Atomic mass 208. ... General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish white Atomic mass 207. ... General Name, Symbol, Number tin, Sn, 50 Chemical series poor metals Group, Period, Block 14, 5, p Appearance silvery lustrous gray Atomic mass 118. ... General Name, Symbol, Number cadmium, Cd, 48 Chemical series transition metals Group, Period, Block 12, 5, d Appearance silvery gray metallic Atomic mass 112. ... Cerrobend®, made by Cerro Metal Products, is also known as Wood’s Metal, Bend alloy, or pewtalloy. ...

Typical applications are as low-melting solder, low-temperature casting metal, as a high temperature coupling fluid in heat baths, and as a fire-melted valve element in building sprinkler systems. Medical gas cylinders in the UK have a Wood's metal seal which melts in fire, allowing the contents to escape and reducing the risk of explosion. A solder is a fusible metal alloy (often of tin and lead, although lead-based solders were outlawed in many parts of the world in the 1980s), with a melting point or melting range below 450 °C (840 °F) and is melted to join metallic surfaces, especially in the fields... This typical sprinkler head will spray water into the room if a fire is detected. ... Industrial compressed gas cylinders used for oxy-fuel welding and cutting of steel. ...

Its inventor, Dr. Wood at MIT, was infamous for casting teaspoons from the alloy which would melt when used to stir hot coffee ^{[citation needed]}. Note that the lead and cadmium components of the alloy makes it toxic. Field's metal is its non-toxic alternative. Mapúa Institute of Technology (MIT, MapúaTech or simply Mapúa) is a private, non-sectarian, Filipino tertiary institute located in Intramuros, Manila. ... Fields metal, or Fields alloy, is a fusible alloy that becomes liquid at approximately 62 °C (144 °F). ...

Because of its low melting temperature, Wood's metal is useful for repairing antiques. To repair a bent piece made of sheet metal, a die can be cast from a good example, and the low temperature of the alloy makes it unlikely that the original will be harmed by the process. The damaged piece can then be clamped in the die and slowly tightened to form it back into shape.

Other low-melting solders and fusible alloys include Rose metal, Galinstan, NaK, and alloys of indium and bismuth. A Fusible alloy, usually eutectic alloy is capable of being fused, as well as being liquefied by heat. ... Rose metal, is also known as “Roses metal” and “Roses alloy” is a fusible alloy with a low melting point. ... Galinstan is an eutectic alloy of gallium, indium, and tin which is liquid at room temperature, typically freezing at -20 °C (-4 °F). ... NaK (often pronounced as such, rhyming with sack) is an alloy of sodium and potassium, and particularly one that is liquid at room temperatures. ... General Name, Symbol, Number indium, In, 49 Chemical series poor metals Group, Period, Block 13, 5, p Appearance silvery lustrous gray Atomic mass 114. ... General Name, Symbol, Number bismuth, Bi, 83 Chemical series poor metals Group, Period, Block 15, 6, p Appearance lustrous reddish white Atomic mass 208. ...

See also

• Cerrobend

Cerrobend®, made by Cerro Metal Products, is also known as Wood’s Metal, Bend alloy, or pewtalloy. ...

External link

• Material Safety Data Sheet - Name: Ostalloy 158 Alpha Metals, Inc. brandname for Wood's metal