TU0

Mass fraction wt%; Under 2.2, elements with specified lower and upper limits are alloying constituents; a single value is a minimum for copper and a maximum for other elements. A dash means unspecified; it is not entered as zero; Cu+Ag and Ni+Co are subject to combined ranges and are not converted into independent element ranges. The balance remains a balance; subtracting independent maxima does not establish a guaranteed range. Total impurities include all relevant impurities; The sum of listed elements is only a necessary condition and cannot replace complete impurity analysis. Product forms in the original document define the applicable wrought-product scope; they do not establish confirmed supply of cold-heading wire or final properties. Copper content for TU0 [C10100] is obtained by the difference method; Cu in this row is the independent minimum value for copper, not subject to the Cu+Ag column.

Mass fraction wt%; GB/T5231—2012, Table 1, row 2, designation T10130. A dash means unspecified and must not be entered as zero; The combined Cu+Ag minimum must not be split into independent minima for Cu and Ag. Table 1, note a: As, Bi and Sb need not be analyzed, but the supplier must guarantee that the respective limits are not exceeded. This standard covers wrought copper and copper-alloy designations and chemical composition; actual supply of cold-heading wire is not inferred.