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ASTM B430

97th Edition, 2001

Complete Document

Standard Test Method for Particle Size Distribution of Refractory Metal Powders and Related Compounds by Turbidimetry

Includes all amendments and changes through Editorial Change 1, May 2006


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Product Details:

  • Revision: 97th Edition, 2001
  • Published Date: May 2006
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 5
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This test method covers the determination of particle size distribution of refractory metal powders with a turbidimeter (1).2 Experience has shown that this test method is satisfactory for the analysis of elemental tungsten, molybdenum, rhenium, tantalum metal powders, and tungsten carbide powders. Other refractory metal powders, for example, elemental metals, carbides, and nitrides, may be analyzed using this test method with caution as to significance until actual satisfactory experience is developed. The procedure covers the determination of particle size distribution of the powder in two conditions:

As the powder is supplied (as-supplied), and

After the powder has been de-agglomerated by rod milling (laboratory milled) according to Practice B 859.

Where dual units are given, inch-pound units are to be regarded as standard.

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

2 The boldface numbers in parenthesis refer to the references listed at the end of this test method.