The chemical determination of lead and tin in stainless steels are tedious and costly, whereas the spectrographic determinations of these elements can be made rapidly and at relatively low cost. The source of these elements in the steel can be attributed to the scrap used in melting, furnace refractories, fluxes, and furnace additions. Using a direct current arc technique, a single sample can be spectro-analyzed in approximately twenty to twenty-five minutes. The spark technique which is preferable for most determinations, is unsatisfactory because it lacks sensitivity.
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