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AS
AS/NZS 1050.30:1994

AS/NZS 1050.30:1994

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Methods for the analysis of iron and steel Determination of boron content - Curcumin spectrophotometric method

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

17-08-2018

Language(s)

English

Published date

08-08-1994

Publisher

Standards Australia

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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3 - AS/NZS 1050.30:1994 METHODS FOR THE ANALYSIS OF IRON AND STEEL - DETERMINATION OF BORON CONTENT - CURCUMIN SPECTROPHOTOMETRIC
4 - PREFACE
5 - CONTENTS
7 - 1 Scope
7 - 2 Normative references
7 - 3 Principle
7 - 4 Reagents
7 - 4.1 Pure iron
7 - 4.2 Sodium hypophosphite monohydrate.
7 - 4.3 Hydrochloric acid
7 - 4.4 Nitric acid.
7 - 4.5 Sulfuric acid
7 - 4.6 Orthophosphoric acid
7 - 4.7 Acetic acid
8 - 4.8 Mixture of acetic and sulfuric acids.
8 - 4.9 Acetic buffer solution.
8 - 4.10 Sodium fluoride
8 - 4.11 Boron
8 - 4.12 Curcumin
8 - 5 Apparatus
8 - 5.1 Quartz beakers with quartz covers
8 - 5.2 Polypropylene or polytetrafluoroethylene volumetric flasks
8 - 5.3 Polypropylene or polytetrafluoroethylene bottle
8 - 5.4 Aluminium alloy block
8 - 5.5 Spectrophotometer
8 - 6 Sampling
8 - 7 Procedure
8 - 7.1 Test portion
9 - 7.2 Blank test 7.3.2 Formation of the coloured complex
9 - 7.2 Blank test
9 - 7.3 Determination
9 - 7.3.1 Preparation of the test solution
9 - 7.3.2 Formation of the coloured complex
9 - 7.3.3 Preparation of the compensating solution
9 - 7.3.4 Spectrophotometric measurements
10 - 7.4 Establishment of the calibration graph
10 - 7.4.1 Preparation of calibration solutions
10 - 7.4.2 Spectrophotometric measurements
10 - 7.4.3 Plotting the calibration graph
10 - 8 Expression of results
10 - 8.1 Calculation of the net absorbance
10 - 8.2 Calculation of the boron content
11 - 8.3 Precision
11 - 9 Test report
12 - Annex A - Examples of aluminium alloy blocks
14 - Annex B - Additional information on the international co-operative tests
15 - Annex C - Graphical representation of precision data
16 - Annex D - Additional precision tests conducted by European countries

Specifies a spectrophotometric method for the determination of boron content between 0.0005 percent and 0.01 percent in steel. This Standard is technically identical with and reproduced from ISO 10153:1991.

Committee
CH-010
DocumentType
Standard
ISBN
0 7262 8905 1
Pages
10
PublisherName
Standards Australia
Status
Withdrawn
Supersedes

This International Standard specifies a curcumin spectrophotometric method for the determination of boron content in steel.

Standards Relationship
ISO 10153:1991 Identical

First published as AS 1050.30-1978.
Jointly revised and redesignated as Joint Standard AS/NZS 1050.30:1994.

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