Concept in Definition ABC

The bronze is a copper tin alloy, from appearance reddish yellow physics; tenacious and sonorous. Copper is its base, while tin can appear in a variable proportion between 3 and 20%.

Bronze has a special importance, since it has been the first alloy that man has obtained, meanwhile, as a consequence of this, it has been decided to name Bronze Age to that period of prehistory in which this metal developed, already in the 4,500 A. C. bronze was known in Bang Chieng, present-day Thailand.

For thousands and thousands of years, bronze was the star alloy at the time of the realization of weapons and utensils of all kinds, and even, goldsmiths have used it at the request of the production from jewels, medals and sculptures.

Also, minted coins with this type of alloy they knew how to play a really relevant role in trade and economy of yesterday's world.

Currently, its use is multiple and occurs in different areas such as: mechanical parts that resist friction and corrosion, in the

elaboration from musical instruments from quality excellent: bells, gongs, saxophones, cymbals, and in the making of string instruments music: guitars, harps and pianos.

Although it develops what is known as patina (spontaneous corrosion of copper), bronze never rusts when it is below the surface, although they are more brittle and have a lower melting point with respect to the steel. Another prominent feature in comparison with steel, bronze is ten percent heavier.

On the other hand, being less rigid than steel, in applications such as springs, they will accumulate less Energy than similar pieces in steel.

Another advantage is that by not producing sparks when struck against hard surfaces, it has been widely used for manufacture hammers, mallets, adjustable wrenches and other tools for use in explosive environments and in the presence of gases flammable.

And another salient property is that it is a best driver of electricity and heat.

Among its main alloys are: arsenical bronze (This type of alloy of copper with arsenic was the first to be used by man; it is hard and brittle), bronze sun (it is widely used in jewelry), bronze for firearms (composed of 90% copper and 10% tin), bronze for bells (The alloy with the best sound for this type of element is 78% copper and 22% tin) and the Kara kane (It is a bronze for bells and goldsmiths used in Japan that includes 60% copper, 24% tin, 9% zinc, plus iron and lead).

Bronze themes