Anyone who has experienced using brass can tell how malleable, strong, and durable it is. This metal is composed mainly of copper and zinc, but sometimes, a miniscule amount of tin and other metals like lead is added to improve its properties. The ratio of copper to tin varies depending on the metal’s intended purpose. The composition ranges from 55 to 90 percent for copper and 10 to 45 percent for zinc.
As for naval brass, the perfect ratio is around 59% copper, 40% zinc, 1% tin, and trace amounts of lead. Due to its composition, this type of brass is classified under a brass subfamily known as “Alpha Beta” or sometimes “Duplex Brasses”, which are stronger and harder than other brass groups, particularly when it comes to dealing with saltwater. This makes them a perfect material for sea vessels.
Why Alloy Composition Is Important
The reason why brasses are classified into different groups is that each unique composition yields a material of unique properties. This is especially the case with malleability and ductility, two critical properties you can get from brass alloys. The malleability of brass depends on the amount of zinc used. When the alloy contains more than 45% of zinc they are known as White Brass and are no longer workable either in hot or cold.\ Read more from this article: http://bit.ly/2pMLMpS
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