HAL59-3-2

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. Zn is the balance; Total impurities exclude elements specified as alloying constituents; all listed elements must not simply be added together. Total impurities ≤.9%. Table 2, note 1: Fe≤0.030% applies to nonmagnetic brass only where nonmagnetic performance is expressly required; Ordinary conditions are not automatically tightened.

Mass fraction wt%; GB/T 5231-2012, Table 3, row 75, designation T69250; scanned PDF, PDF physical page 9. Zn is balance; dashes mean unspecified and are not replaced with zero. Clause 2.2: single impurity values in the table are maxima. The total of table-listed impurities is ≤0.9% and must be checked against measured values for the impurity elements specified in the standard. This standard provides the grade-composition basis for wrought copper and copper alloys; actual supply and cold-heading suitability require separate confirmation.