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ASTM B 922 : 2017 : REDLINE

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Metal Powder Specific Surface Area by Physical Adsorption
Available format(s)

PDF

Superseded date

08-08-2020

Language(s)

English

Published date

01-01-2017

CONTAINED IN VOL. 02.05, 2017 Defines determination of surface area of metal powders.

1.1This test method covers determination of surface area of metal powders. The test method specifies general procedures that are applicable to many commercial physical adsorption instruments. The method provides specific sample outgassing procedures for listed materials. It includes additional general outgassing instructions for other metals. The multipoint equation of Brunauer, Emmett and Teller (BET),2 along with the single point approximation of the BET equation, forms the basis for all calculations.

1.2This test method does not include all existing procedures appropriate for outgassing metallic materials. The procedures included provided acceptable results for samples analyzed during interlaboratory testing. The investigator shall determine the appropriateness of listed procedures.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3.1State all numerical values in terms of SI units unless specific instrumentation software reports surface area using alternate units. In this case, present both reported and equivalent SI units in the final written report. Many instruments report surface area as m2/g, instead of using correct SI units (m2/kg).

1.4This 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 and health practices and determine the applicability of regulatory limitations prior to use.

Committee
B 09
DocumentType
Redline
Pages
5
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

PD ISO/TR 18196:2016 Nanotechnologies. Measurement technique matrix for the characterization of nano-objects
ASTM E 2864 : 2013 Standard Test Method for Measurement of Airborne Metal and Metal Oxide Nanoparticle Surface Area Concentration in Inhalation Exposure Chambers using Krypton Gas Adsorption
ISO/TR 18196:2016 Nanotechnologies — Measurement technique matrix for the characterization of nano-objects

ASTM B 215 : 2015 : REDLINE Standard Practices for Sampling Metal Powders

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