Bronze

What is bronze?

The bronze It is a metal product of the alloy (combination) between certain percentages of copper, tin or other metals. The ratio between the two main components will determine the color, stiffness and use of the resulting product.

The origin of bronze dates back to 1700 AD, a period of prehistory characterized by the use of this new material for the construction of weapons and utensils, which meant a great step forward in terms of technology and the end of the Stone Age.

The term bronze comes from the Latin Brundisiumwhich was the name of an ancient Italian city now known as Brindisi, from where bronze was distributed throughout the Roman Empire.

Bronze Properties

Bronze has the following properties:

  • Their boiling pointn is 2230 to 2420 °C
  • Their melting point is 830 to 1020 °C
  • The bronze density is 8.90 g/cm3.
  • The bronze hardnessaccording to the Binell scale, ranges from 70 to 200 HB (the maximum measurement of this hardness scale is 600 HB).

See also:

  • Metal
  • metal properties

Characteristics of bronze

Bronze is a metallic alloy characterized by:

  • It is an excellent conductor of electricity.
  • Accumulates less heat than other metalsfor this reason it is used in the manufacture of industrial elements, since its use is safe.
  • It is less rigid than other metalswhich is why it is an easy material to handle.
  • The bronze is corrosion resistant and this extends the useful life of products made with this alloy.
  • does not generate sparks when struck against a rigid surface, this makes bronze a safe material to use in the presence of flammable gases or explosive elements.
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Composition of the bronze

Bronze has a basic composition of copper and tin, with copper being the base metal.

However, the composition of bronze can vary depending on its type and include other metals, generating various types of alloys. The most common compositions and proportions are:

  • basic bronze: 89% copper and 11% tin.
  • sun bronze: It has a variable proportion of cobra and up to 60% cobalt.
  • Cuproaluminum: is a mixture of copper and up to 11% aluminum.
  • Bell metal or bell brass: 78% copper and 22% tin.
  • kane-kane: It is a very popular alloy in Japan that has 60% copper, 24% tin, 9% zinc and minor proportions of iron, lead, antimony or arsenic.

See also Copper.

uses of bronze

Due to its versatility, bronze is an alloy widely used in different areas, such as:

Industrial tools or parts

Bronze is used as the main input for industrial use in the manufacture of hammers, springs, turbines, etc.

coins

Bronze is a resistant material but at the same time more malleable than other metals, which is why it is used to mint coins in different countries.

Jewelry and costume jewelery

Depending on the proportion of its components, bronze can be used in the manufacture of high-end jewelry, as well as serial costume jewelry.

sound instruments

Bronze is used for making bells, chimes, cymbals, and gongs.