BS EN 10179:2024

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Steels. Determination of nitrogen (trace amounts). Spectrophotometric method

Published By	Publication Date	Number of Pages
BSI	2024	20

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Categories: 77.080.20 - Steels, BSI

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Description

This document specifies a spectrophotometric method for the determination of nitrogen in steels. The method is primarily intended for the determination of total nitrogen in very low contents in non-alloy steels. It can 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. These highly resistant nitrides have 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 0,000 5 % (by mass) to 0,005 % (by mass). The precision data of the present method are given in Annex A.

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PDF Pages	PDF Title
2	undefined
5	European foreword
6	1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents
9	6 Apparatus
10	Figure 1 — Cation exchange column
12	Figure 2 — Example of aluminium alloy heating block
13	Figure 3 — Steam distillation apparatus
14	7 Sampling 8 Procedure 8.1 Test portion 8.2 Blank test 8.3 Preparation of the steam distillation apparatus
15	8.4 Determination 8.4.1 Preparation of the test solution 8.4.2 Distillation 8.4.3 Development of the colour
16	8.4.4 Spectrophotometric measurements 8.5 Establishment of the calibration curve 8.5.1 Preparation of the calibration solutions Table 1 — Calibration solutions 8.5.2 Spectrophotometric measurements
17	8.5.3 Plotting the calibration curve 9 Expression of results 10 Test report
18	Annex A (informative) Precision data Table A.1 — Statistical information
19	Bibliography

Additional information

Status	Definitive
Pages	20
Publication Date	2024-06-21
ISBN	978 0 539 26726 6
Standard Number	BS EN 10179:2024
Title	Steels. Determination of nitrogen (trace amounts). Spectrophotometric method
Identical National Standard Of	EN 10179
Replaces	BS 6200-3.22.3:1986
Descriptors	Chemical analysis and testing, Reproducibility, Test equipment, Determination of content, Steels, Precision, Testing conditions, Spectrophotometry, Unalloyed steels, Reagent solutions, Calibration, Ferrous alloys, Nitrogen, Complexing methods, Trace element analysis, Distillation methods of analysis
Publisher	BSI
Committee	ISE/1
ICS Codes	77.080.20 - Steels

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BS EN 10179:2024

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