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Standard Test Method for Hydrogen Loss of Cobalt, Copper, Tungsten, and Iron Powders
STANDARD published on 10.1.2000
Designation standards: ASTM E159-00
Note: WITHDRAWN
Publication date standards: 10.1.2000
SKU: NS-42278
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
chemical analysis, cobalt powder, copper-powder, hydrogen loss, iron-powder, metal powders, oxygen content, tungsten-powder, ICS Number Code 77.160 (Powder metallurgy)
1. Scope | ||||||||
1.1 This test method covers the determination of oxygen due to the presence of hydrogen-reducible oxides in copper, tungsten, and iron powders. This test method consists of subjecting a sample of powder to the action of a hydrogen-containing gas under standard conditions of temperature and time and measuring the resulting loss of weight. This test method is useful for copper and iron powders in the range from 0.05 to 3.0% oxygen and for tungsten powder in the range from 0.01 to 0.50% oxygen. This test method does not measure the oxygen contained in oxides such as silicon oxide (SiO2), aluminum oxide (Al2O3), magnesium oxide (MgO), calcium oxide (CaO), titanium dioxide (TiO2), etc. that are not reduced by hydrogen at the test temperatures. For total oxygen content, vacuum or inert gas fusion methods are available. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only. 1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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