| ||Today Malaysia and Indonesia are the main producers of raw tin where open surface mining is used. Bolivia also produces tin, although underground mining is used. |
Tin ore is refined in the producing countries. It is poured into bars and arrives at our workshop with virtually 100% purity. A basic element symbolized by Sn, tin is a light-colored, relatively light metal. Its exact weight is 7.3, and its melting point lies at 232° centigrade. Alone, pure tin is too soft and brittle for manufacturing purposes. It must be alloyed with copper and antimony. These additives make up about 5% of pewter and give the material more strength and better casting qualities.