{"id":431043,"date":"2024-10-20T07:26:01","date_gmt":"2024-10-20T07:26:01","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-4491-22023\/"},"modified":"2024-10-26T14:07:53","modified_gmt":"2024-10-26T14:07:53","slug":"bs-en-iso-4491-22023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-4491-22023\/","title":{"rendered":"BS EN ISO 4491-2:2023"},"content":{"rendered":"
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.<\/p>\n
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2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
4<\/td>\n | European foreword Endorsement notice <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Reagents and materials 5 Apparatus 5.1 General 5.2 Balance <\/td>\n<\/tr>\n | ||||||
8<\/td>\n | 5.3 Furnace 5.4 Gas-tight tube 5.5 Thermocouple 5.6 Boat 5.7 Supply unit <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 6 Sampling 7 Procedure 7.1 General 7.2 Test procedure <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 8 Calculation and expression of test results 9 Precision <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 10 Test report <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | Annex A (informative) Interpretation of results <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Metallic powders. Determination of oxygen content by reduction methods – Loss of mass on hydrogen reduction (hydrogen loss)<\/b><\/p>\n |