BS 6200-3.22.3:1986
Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen. Steel: spectrophotometric method (for trace amounts)

Standard No.

BS 6200-3.22.3:1986

Release Date

1986

Published By

British Standards Institution (BSI)

Latest

BS 6200-3.22.3:1986

Replace

Handbook 19-1970

Scope

This EURONORM specifies a method for the spectrophoto-metric determination of nitrogen in steels. The method is primarily intended for the determination of total nitrogen in very low nitrogen non-alloy steels. It may be used, however, for any low nitrogen ferrous alloy that is soluble in hydrochloric acid provided that the acid-resistant form of silicon nitride is not present. This highly resistant nitride has been found only in samples of silicon steels manu- factured without aluminium addition and then only in sheet material. The method is applicable to nitrogen contents from 0.0005 to 0.005% (m/m). NOTE —The method has also been successfully applied to a pure iron with a nitrogen content of 0.0038% (m/m) —see Annex.

BS 6200-3.22.3:1986 history

• 1986 BS 6200-3.22.3:1986 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen. Steel: spectrophotometric method (for trace amounts)