UNS Standard Designations for Wrought and Cast Copper and Copper Alloys: Introduction


The conference call will be held on Wednesday, November 14, at 8: Special Alloys Alloys whose chemical compositions do not fall into any of the above categories are combined in "special alloys. MatWeb is intended for personal, non-commercial use.

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These standard designations do not preclude any member or non-member from manufacturing or supplying products which do not conform to these standard designations. The standard designation composition limits do not preclude the possible presence of other unnamed elements.

However, analysis shall regularly be made only for the minor elements listed in the table, plus either copper or zinc or plus all major elements except one. By agreement between producer or supplier and consumer, analysis may be required and limits established for elements not cited.

Percentage content of elements shown as "Remainder" Rem. The composition limits in this listing of Standard Designations for Copper and Copper Alloys are presented according to the following numerical convention, wherever practicable. In the designation system, numbers from C through C denote wrought alloys.

Cast alloys are numbered from C through C Within these two categories, the compositions are grouped into the following families of coppers and copper alloys: Coppers Metals which have a designated minimum copper content of High Copper Alloys For the wrought products, these are alloys with designated copper contents less than Brasses These alloys contain zinc as the principal alloying element with or without other designated alloying elements such as iron, aluminum, nickel and silicon.

The wrought alloys comprise three main families of brasses: The cast alloys comprise four main families of brasses: Ingot for remelting for the manufacture of castings may vary slightly from the ranges shown. Bronzes Broadly speaking, bronzes are copper alloys in which the major alloying element is not zinc or nickel. Originally "bronze" described alloys with tin as the only or principal alloying element.

Today, the term is generally used not by itself but with a modifying adjective. For wrought alloys , there are four main families of bronzes: Copper-Nickels These are alloys with nickel as the principal alloying element, with or without other designated alloying elements. Copper-Nickel-Zinc Alloys Known commonly as "nickel silvers," these are alloys which contain zinc and nickel as the principal and secondary alloying elements, with or without other designated elements.

Special Alloys Alloys whose chemical compositions do not fall into any of the above categories are combined in "special alloys.