Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Science

type metal

type metal compositions
Percentage compositions of typical type metals. The hardest alloys are nearest the bottom
The name given to various alloys of lead, antimony, and tin, easily cast to make printing type. Owing to the presence of antimony, type metal expands on solidifying and thus gives a sharp cast. Type metl contains 2.5–25% lead and 2.5–25% antimony; both tin and antimony lower the melting point, which is usually between 240° and 250°C (460–475°F).

Related categories