Preparation of Spectrographic Standards of Low Boron Content for Determination of Boron in Iron

Abstract

Spectrographic determination of boron in steel has been hindered by the lack of reliable standards in the low boron range.By using vacuum melting techniques and careful ingot processing, precise boron standards can be made which contain as little as 1 p.p.m. of boron.

Ferrous Metallurgy

“…Spectrographic reference steels for the boron concentration range from 0.0001 to 0.0006% were prepared by vacuum melting high purity iron with addition of the proper quantities of National Bureau of Standards' No. 830 spectrographic standard (149).…”