出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/07/29 19:11 UTC 版)
Tombac, as spelled in French, or Tombak is a brass alloy with high copper content and 5-20% zinc content. Tin, lead or arsenic may be added for colouration. It is a cheap malleable alloy mainly used for medals, ornament, decoration and some munitions. In older use, the term may apply to brass alloy with a zinc content as high as 28%-35%.