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What are the types of copper and its alloys?‎

WEST ASIA COPPER EXCHANGE

Specifications, Properties, Classifications and Classes of Copper alloys

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Which country do you want to trade with?
  • Afghanistan
  • Armenia
  • Azerbaijan
  • Bahrain
  • Egypt
  • Georgia
  • Iran
  • Iraq
  • Israel
  • Jordan
  • Kuwait
  • Lebanon
  • Oman
  • Pakistan
  • Qatar
  • Saudi Arabia
  • Syria
  • Turkey
  • United Arab Emirates
  • Yemen
Specifications, Properties, Classifications and Classes of Copper alloys

1- Pure copper: which contains 99.3% or more copper.‎

2 - Alloys with a high percentage of copper: have a percentage of Copper between 96% to ‎‎99.3% and to achieve special properties, Silver may be added.‎

3- Brass: It has Zinc as the main alloying element, also other elements such as iron, aluminum, ‎nickel, and silicon are added to improve the properties of the alloy. Brass has high corrosion ‎resistance and tensile strength.‎

Brass additives

Adding lead to brass metal compounds can improve machining properties, as well as reduce ‎tool wear. Adding aluminum, iron, and manganese to rice increases strength, adding silicon ‎improves abrasion resistance.‎

Classification of brasses

  • Alpha brass, with a zinc content of less than 37%. These alloys are ductile and can be cooled.‎
  • Alpha-beta or binary brass contains 37-45% zinc. These alloys have a more limited ductility ‎and are harder and stronger.‎

Brass metal families:‎

  • CU-Zn alloys
  • ‎CU-Zn-Pb alloys (leaded brass)‎
  • ‎Cu-Zn-Sn alloys (tin brass)‎

4 - Bronzes: have tin as the only alloying element or the main alloying element. Today, bronze ‎refers to copper alloys whose main alloy element is other than nickel and zinc.‎

The bronze family includes:‎

  • Cu-Sn-P alloys (phosphor bronzes)‎
  • ‎CU-Sn-Pb-P alloys ((lead phosphor bronze)‎
  • ‎Cu-Al alloys ((aluminum bronze)‎
  • ‎CU-Si alloys ((silicon bronzes)‎

5 - Other alloy groups

  • CU-Ni alloys: As the name implies, the main alloying element is nickel. This group can include ‎other alloying elements or nickel alone.‎
  • CU-Ni-Zn alloys: These alloys are known as nickel silver due to the color of the alloy. This ‎group contains zinc and nickel as the main alloying elements, and other alloying elements may ‎also be added.‎

Leaded Copper: Lead copper is a cast copper alloy that contains 20% or more lead additive. They ‎also contain small amounts of silver but no trace elements or zinc.‎

6- Special alloys: When alloys contain chemical compounds that do not fall into any of the ‎above groups, they are called special alloys.‎

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