1.1 This practice covers the sampling, for the determination of chemical composition (Note 1) of nonferrous metals and alloys in cast form for remelting or mechanical working.1.1.1 Refer to Practice E255 for copper and copper alloys. Note 1--The selection of correct portions of material and the preparation of a representative sample from such portions are necessary prerequisites to every analysis, the analysis being of no value unless the sample actually represents the average c