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BS EN ISO 4491-2:2023

BS EN ISO 4491-2:2023

$102.76

Metallic powders. Determination of oxygen content by reduction methods – Loss of mass on hydrogen reduction (hydrogen loss)

Published By Publication Date Number of Pages
BSI 2023 16
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This document specifies a method for the determination of the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specified conditions. The purpose of this test is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not intended as a means for the determination of the content of specific elements (see Annex A and ISO 4491-1). The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in Table 1 (see 7.2.1). It is not applicable to lubricated powders or to mixtures of metal powders.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Reagents and materials
5 Apparatus
5.1 General
5.2 Balance
8 5.3 Furnace
5.4 Gas-tight tube
5.5 Thermocouple
5.6 Boat
5.7 Supply unit
9 6 Sampling
7 Procedure
7.1 General
7.2 Test procedure
11 8 Calculation and expression of test results
9 Precision
12 10 Test report
13 Annex A (informative) Interpretation of results
14 Bibliography

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BS EN ISO 4491-2:2023
$102.76