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immediate downloadReleased: 1986-09-30
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)
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Standard number: | BS 6200-3.22.3:1986 |
Pages: | 14 |
Released: | 1986-09-30 |
ISBN: | 0 580 15335 5 |
Status: | Standard |
DESCRIPTION
BS 6200-3.22.3:1986
This standard BS 6200-3.22.3:1986 Sampling and analysis of iron, steel and other ferrous metals. Methods of analysis. Determination of nitrogen is classified in these ICS categories:
- 77.080.20 Steels
This EURONORM specifies a method for the spectrophotometric 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 manufactured 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.