Aluminium bronze with 20% Aluminium, V=50:1

Aluminium bronze is a type of bronze in which aluminium is the main alloying metal added to copper. Bronze is any of a broad range of Copper alloys, usually with Tin as the main additive but sometimes with other elements such as Phosphorus WikipediaNaming An alloy is a Solid solution or Homogeneous mixture of two or more elements, at least one of which is a Metal, which itself has The M acro E xpansion T emplate A ttribute L anguage complements TAL, providing macros which allow the reuse of code across Copper (ˈkɒpɚ is a Chemical element with the symbol Cu (cuprum and Atomic number 29 A variety of aluminium bronzes of differing compositions have found industrial use, with most ranging from 5% to 11% aluminium by weight, the remaining mass being copper; other alloying agents such as iron, nickel, manganese, and silicon are also sometimes added to aluminium bronzes. Iron (ˈаɪɚn is a Chemical element with the symbol Fe (ferrum and Atomic number 26 Nickel (ˈnɪkəl is a metallic Chemical element with the symbol Ni and Atomic number 28 Manganese (ˈmæŋgəniːz is a Chemical element, designated by the symbol Mn. Silicon (ˈsɪlɪkən or /ˈsɪlɪkɒn/ silicium is the Chemical element that has the symbol Si and Atomic number 14

Compositions

Following is a list of common standard aluminium bronze wrought alloy compositions, by ISO 428 designations (proportional composition by weight; copper is the remainder by weight and is not listed):

Material properties

Aluminium bronzes are most valued for their higher strength and corrosion resistance as compared to other bronze alloys. Corrosion means the breaking down of essential properties in a material due to Chemical reactions with its surroundings These alloys are tarnish-resistant and show low rates of corrosion in atmospheric conditions, low oxidation rates at high temperatures, and low reactivity with sulfurous compounds and other exhaust products of combustion. Tarnish is a layer of Corrosion that develops over Copper, Brass, Silver, Aluminum as well as a degree of semi-reactive metals as Temperature and layers The temperature of the Earth's atmosphere varies with altitude the mathematical relationship between temperature and altitude varies among five Redox (shorthand for reduction-oxidation reaction describes all Chemical reactions in which atoms have their Oxidation number ( Oxidation state Sulfur or sulphur (ˈsʌlfɚ see spelling below) is the Chemical element that has the Atomic number 16 Exhaust gas is Flue gas which occurs as a result of the Combustion of fuels such as Natural gas, Gasoline /petrol Diesel, Fuel Combustion or burning is a complex sequence of Exothermic chemical reactions between a Fuel and an Oxidant accompanied by the production of They are also resistant to corrosion in sea water. Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3 Aluminium bronzes' resistance to corrosion rests in the aluminium component of the alloys, which reacts with atmospheric oxygen to form a thin, tough surface layer of alumina (aluminium oxide) which acts as a barrier to corrosion of the copper-rich alloy. Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the

Another notable property of aluminium bronzes are their biostatic effects. Bacteriostatic Antibiotics limit the growth of bacteria by interfering with bacterial Protein production DNA replication or other aspects of The copper component of the alloy prevents colonization by marine organisms including algae, lichens, barnacles, and mussels, and therefore can be preferable to stainless steel or other non-cupric alloys in applications where such colonization would be unwanted. Algae ( sing. alga are a large and diverse group of simple typically Autotrophic organisms ranging from Unicellular to Multicellular forms Lichens (ˈlaɪkən or /lɪtʃən/ are symbiotic associations of a Fungus (the mycobiont with a photosynthetic partner (the photobiont also known as A barnacle is a type of Arthropod belonging to infraclass Cirripedia in the subphylum Crustacea, and is hence distantly related to The common name mussel is used for members of several different families of Clams or Bivalve Molluscs, from both saltwater and freshwater habitats In Metallurgy, stainless steel is defined as a Steel Alloy with a minimum of 11

Aluminium bronzes tend to have a golden color.

Applications

Aluminium bronzes are most commonly used in applications where their resistance to corrosion makes them preferable to other engineering materials. These applications include bearing brushes and landing gear components on aircraft, engine components (especially for sea-going ships), underwater fastenings in naval architecture, and ship propellers. In Aviation, the undercarriage or landing gear is the structure (usually wheels that supports an Aircraft on the ground and allows it to taxi An engine is a mechanical device that produces some form of output from a given input Naval architecture is an engineering discipline dealing with the design construction and repair of marine vehicles A propeller is essentially a type of fan which transmits power by converting Rotational motion into Thrust for propulsion of a vehicle such as an The attractive gold-toned coloration of aluminium bronzes has also led to their use in jewelry. Jewellery (also spelled jewelry, see spelling differences) is a personal Ornament, such as a necklace ring or bracelet made from Gemstones

Aluminium bronzes are in the highest demand from the following industries and areas:

• General sea water-related service
• Water supply
• Oil and petrochemical industries eg tools for use in non-sparking environments
• Specialized anti-corrosive applications
• Certain structural retrofit building applications

Aluminium bronze can be welded using the MIG welding technique with an aluminium bronze core and pure argon gas. Seawater is Water from a Sea or Ocean. On average seawater in the world's oceans has a Salinity of about 3 Water supply is the process of self-provision or provision by third parties of water of various qualities to different users An oil is a substance that is in a viscous Liquid state ( "oily") at ambient temperatures or slightly warmer and is Petrochemicals are chemical products made from raw materials of Petroleum or other Hydrocarbon origin Welding is a fabrication process that joins materials usually Metals or Thermoplastics by causing coalescence. Gas metal arc welding (GMAW, sometimes referred to by its subtypes metal inert gas (MIG welding or metal active gas (MAG welding, is a semi-automatic or automatic This article pertains to the chemical element For other uses see Argon (disambiguation.

Alloys similar to Aluminium bronze are used in making coins, for example the $1 and $2 Australian coins produced by the Royal Australian Mint and the Nordic gold used for some Euro coins. Coins of the Australian dollar were introduced on 14 February 1966. The Royal Australian Mint (RAM is situated in the Australian federal capital city of Canberra, in the suburb of Deakin. Nordic gold is the Alloy from which the middle three denominations of Euro coins, 50 cent 20 cent and 10 cent Coins are made Linguistic

References

• Copper Development Association. "Publication Number 80: Aluminium Bronze Alloys Corrosion Resistance Guide". Retrieved July 18, 2005. Events 390 BC - Roman - Gaulish Wars Battle of the Allia - a Roman army is defeated by raiding Gauls, Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar.
• Copper Development Association. "Publication Number 82: Aluminium Bronze Alloys Technical Data". Retrieved July 18, 2005. Events 390 BC - Roman - Gaulish Wars Battle of the Allia - a Roman army is defeated by raiding Gauls, Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar.