出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/28 10:23 UTC 版)
Nickel silver, also known as German silver, Argentann, paktong, new silver, nickel brass, or alpacca (or alpaca), is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. In fact, all modern, commercially important nickel silvers (such as those standardized under ASTM B122) contain significant amounts of zinc, and are sometimes considered a subset of brass. Paktong is actually not a pseudonym for Nickel Silver, but the metal Nickel Silver was made to imitate. Whilst Paktong is a similar alloy there are subtle compositional differences and more important chronological differences.