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AS 3719.2-1998
[Current]Aluminium and aluminium alloys, Part 2: Determination of silicon — Gravimetric method
Sets out a gravimetric method for the determination of silicon in aluminium alloys in the range 0.30 percent to 13 percent.
Published: 05/07/1998
Pages: 10
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE
2 REFERENCED DOCUMENTS
3 PRINCIPLE
4 REAGENTS
4.1 General requirements
4.2 Solids
4.3 Solutions
4.3.1 Hydrofluoric acid (ρ20 1.15 g/mL)
4.3.2 Hydrobromic acid (ρ20 1.49 g/mL)
4.3.3 Hydrochloric acid (50 mL/L)
4.3.4 Nitric acid (ρ20 1.42 g/mL)
4.3.5 Perchloric acid (ρ20 1.54 g/mL)
4.3.6 Perchloric acid (350 mL/L)
4.3.7 Sulfuric acid (500 mL/L)
4.3.8 Bromine water
4.3.9 Hydrogen peroxide, 6% (V/V)
4.3.10 Sodium hydroxide solution (50 g/L)
5 APPARATUS
5.1 Volumetric glassware
5.2 Beaker
6 SAMPLING
7 PROCEDURE
7.1 Number of determinations
7.2 Blank test
7.3 Check test
7.4 Determination
7.4.1 Dissolution of the test portion
7.4.2 Dehydration of silica
7.4.3 Filtration and washing
7.4.4 Recovery of silica from the filtrate
7.4.5 Calcination and volatilization of silica
8 CALCULATION
9 PRECISION
10 ACCEPTANCE OF ANALYTICAL VALUES
10.1 Limit of assumed silicon content
10.2 Single determination
10.3 Replicate determinations
10.4 Acceptance of reference material values
11 TEST REPORT
APPENDIX A
A1 PRINCIPLE
A2 DISSOLUTION OF THE TEST PORTION
APPENDIX B
B1 PRINCIPLE
B2 MODIFICATIONS TO THE GENERAL METHOD
B2.1 Dissolution of the test portion
B2.2 Dehydration of silica
APPENDIX C
Cited references in this standard
[Withdrawn]
Verification and use of volumetric apparatus, Part 1: General — Volumetric glassware
[Current]
Aluminium and aluminium alloys — Sampling for chemical and spectrochemical analysis
[Withdrawn]
Chemical analysis — Interlaboratory test programs — For determining precision of analytical method(s) — Guide to the planning and conduct
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