Cookies
Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
ASTM B276-21
Standard Test Method for Apparent Porosity in Cemented Carbides
NORMA vydaná dňa 1.9.2021
Informácie o norme:
Označenie normy: ASTM B276-21
Dátum vydania normy: 1.9.2021
Kód tovaru: NS-1049008
Počet strán: 19
Približná hmotnosť: 57 g (0.13 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM B276-21 :
Keywords:
apparent porosity, cemented carbides, hardmetals, microstructure, powder metallurgy ,, ICS Number Code 77.160 (Powder metallurgy)
Doplňujúce informácie
| Significance and Use | ||||||
|
4.1?Cemented carbide materials may contain small voids that, depending on the application, may affect the performance of the product. To assist users in specifying the maximum acceptable level of porosity, this test method illustrates a broad range of porosity levels for each of three porosity types. This test method is not intended to be used as a specification, but the levels shown here may be cited in specifications written by producers and users of cemented carbides. |
||||||
| 1. Scope | ||||||
|
1.1?This test method specifies procedures for the metallographic determination of apparent porosity in cemented carbides. Note 1:?The term apparent porosity is construed to mean all
microstructures observed on a properly prepared, unetched surface,
including structures resulting from uncombined carbon, non-metallic
inclusions, etc., as well as true, inherent porosity.
1.2?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.3?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||
| 2. Referenced Documents | ||||||
|
Odporúčame:
Aktualizácia technických noriem
Chcete mať istotu, že používate len platné technické normy?
Ponúkame Vám riešenie, ktoré Vám zaistí mesačný prehľad o aktuálnosti noriem, ktoré používate.
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
