Table of Contents

1 -  AS/NZS 1050.14:1994 METHODS FOR THE ANALYSIS OF IRON AND STEEL - DETERMINATION OF MANGANESE IN IRON AND STEEL-TITRIMETRIC METHOD
4 -  PREFACE
4 -  CONTENTS
5 -  1 SCOPE
5 -  2 REFERENCED DOCUMENTS
5 -  3 PRINCIPLE
5 -  4 REAGENTS
5 -  4.1 General requirements
5 -  4.2 Solutions
5 -  4.2.1 Sulfuric acid (r20 1.84 g/mL)
5 -  4.2.2 Sulfuric acid (500 mL/L)
5 -  4.2.3 Sulfuric acid (150 mL/L)
6 -  4.2.4 Sulfuric acid (50 mL/L)
6 -  4.2.5 Sulfuric acid (25 mL/L)
6 -  4.2.6 Ammonium hydroxide solution (500 mL/L)
6 -  4.2.7 Hydrochloric acid (r20 1.18 g/mL)
6 -  4.2.8 Nitric acid (r20 1.42 g/mL)
6 -  4.2.9 Sulfurous acid solution
6 -  4.2.10 Zinc oxide suspension
6 -  4.2.11 Phosphoric acid-sulfuric acid mixture
6 -  4.2.12 Ammonium persulfate solution (125 g/L)
6 -  4.2.13 Ammonium iron(II) sulfate solution (approx. 20 g/L)
6 -  4.2.14 Silver nitrate solution (10 g/L)
6 -  4.2.15 Potassium dichromate solution (0.008 334 mol/L)
6 -  4.2.16 Preoxidized sodium diphenylamine sulfonate solution (3.2 g/L)
7 -  5 APPARATUS
7 -  6 SAMPLING
7 -  7 PROCEDURE
7 -  7.1 Number of determinations
7 -  7.2 Blank test
7 -  7.3 Check test
7 -  7.4 Dissolution of sample
8 -  7.5 Removal of interfering elements
8 -  7.6 Determination of manganese content
9 -  7.7 Standardization of ammonium iron(II) sulfate solution
9 -  8 CALCULATIONS
9 -  9 PRECISION
10 -  10 ACCEPTANCE OF ANALYTICAL VALUES
10 -  10.1 Single test sample
10 -  10.2 Replicate determinations
11 -  10.3 Acceptance of reference material values
11 -  11 TEST REPORT

Abstract

This method sets out a titrimetric method, using the permanganate ion formed by oxidation, for the determination of the manganese content of iron and steel. The method covers the range 0.50% to 15% manganese and is applicable to all grades of iron and steel.

Scope

This Standard sets out a titrimetric method, using the permanganate ion formed by oxidation, for the determination of the manganese content of iron and steel. The method covers the range 0.50% to 15% manganese and is applicable to all grades of iron and steel.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	CH-010
Supersedes	AS 1050.14-1981