Spectrographic determination of boron in steel

Abstract

The spectrographic determination of small amounts of boron in thin steel rods and in massive pieces of steel was investigated by using several types of arc-like discharges. The sensitivity and accuracy in determining boron were found to be affected by variations in the rate of cooling of the electrodes. With %2-inchrod electrodes, the high-voltage alternating-current arc permits determinations down to 0.0006 percent of boron, with an average deviation of 4 percent.