AS 2738:2000 pdf – Copper and copper alloys— Compositions and designations of refinery products, wrought products,ingots and castings

AS 2738:2000 pdf – Copper and copper alloys— Compositions and designations of refinery products, wrought products,ingots and castings.
1.3.2 Wrought alloys
1.3.2.1 Coppers (C10000 to C15900) Coppers contain a minimum of 99.3% copper.
1.3.2.2 High copper alloys (C16000 to C19900) High copper alloys have a copper content within the range 96% to 99.3%, and do not fall into other copper alloy groups.
1.3.2.3 Brasses (C20000 to C49900) Brasses are alloys containing zinc as the principal alloying element, but may contain other alloying elements such as iron, aluminium, nickel, lead, tin and silicon. They comprise three main groups, as follows:
(a) Copper-zinc (C20000 to C29900).
(b) Copper-zinc-lead (leaded brasses) (C30000 to C39900).
(c) Copper-zinc-tin (tin brasses) (C40000 to C49900).
1.3.2.4 Bronzes (C50000 to C66300) Bronzes are alloys which have a major alloying
element other than zinc or nickel. They comprise three main groups, as follows:
(a) Copper-tin-phosphorus (phosphor bronzes) (C50000 to C59900).
(b) Copper-aluminium (aluminium bronzes) (C60000 to C64500).
(c) Copper-silicon (silicon bronzes) (C64600 to C66300).
1.3.2.5 Miscellaneous copper-zinc alloys (C66400 to C69900) The miscellaneous copper-
zinc alloys are alloys which do not fall into the categories of Clause 1.3.2.3.
1.3.2.6 Copper-nickel alloys (C70000 to C72900) Copper-nickel alloys are alloys with
nickel as the principal alloying element, with or without other alloying elements present.
1.3.2.7 Copper-nickel-zinc alloys (nickel silvers) (C73000 to C79900) The nickel silvers are alloys which contain zinc and nickel as the principal and secondary alloying elements, with or without any other alloying elements present.
1.3.3 Cast alloys
1.3.3.1 Coppers and copper alloys (C80000 to C82990)
1.3.3.2 Brasses (C83000 to C87900)
1.3.3.3 Copper-tin alloys (C90000 to C91 900)
1.3.3.4 Copper-tin-lead alloys (C92000 to C94500)
1.3.3.5 Aluminium bronzes (C95000 to C95900)
1.3.3.6 Copper-nickel alloys (C96000 to C96 950)
1.4 CHEMICAL COMPOSITION
1.4.1 Specific limits The method of expressing the limits of each specified element or impurity in a copper or a copper alloy, in terms of the number of decimal places, shall be in accordance with Table 1.1.
NOTE: The percentage content of elements shown as ‘REM’ (remainder) is normally calculated by difference.
1.4.2 Unnamed elements The specified limits contained in the chemical composition tables in Sections 2, 3 and 4 of’ this Standard do not preclude the possible presence of other unnamed elements. However, analysis shall regularly be made for the minor elements listed in the tables, plus all major elements except one. The major element which is not analysed shall be determined by difference between the sum of those elements analysed and 100%.
NOTE: By agreement between the purchaser and the supplier, analysis may be required and limits established for elements not specified.