BS EN ISO 10070:2019 - Metallic Powders Standard

The BS EN ISO 10070:2019 is an essential standard for professionals working with metallic powders. This comprehensive document provides a detailed methodology for determining the envelope-specific surface area of metallic powders. It achieves this through precise measurements of the permeability to air of a powder bed under steady-state flow conditions. Released on January 8, 2020, this standard is a critical resource for ensuring accuracy and consistency in the analysis of metallic powders.

Key Features

• Standard Number: BS EN ISO 10070:2019
• Pages: 28
• Release Date: January 8, 2020
• ISBN: 978 0 580 52133 1
• Status: Standard

Comprehensive Coverage

This standard is meticulously crafted to provide a thorough understanding of the procedures involved in measuring the envelope-specific surface area of metallic powders. It is an invaluable tool for researchers, engineers, and quality control professionals who require precise and reliable data for their work with metallic powders.

Why Choose BS EN ISO 10070:2019?

The BS EN ISO 10070:2019 standard is recognized globally for its rigorous approach and detailed guidelines. It ensures that users can achieve consistent and repeatable results, which are crucial for maintaining the quality and performance of metallic powders in various applications. By adhering to this standard, professionals can enhance the reliability of their processes and products.

Applications

The methodologies outlined in this standard are applicable across a wide range of industries, including:

• Metallurgy: For the development and refinement of metal powders used in manufacturing and production processes.
• Pharmaceuticals: In the formulation of metallic compounds and coatings.
• Aerospace: For the creation of lightweight, high-strength components.
• Automotive: In the production of parts that require precise material properties.

Technical Insights

The standard provides a detailed explanation of the principles behind the measurement of permeability to air, which is a critical factor in determining the surface area of metallic powders. It includes guidelines on the preparation of the powder bed, the equipment required, and the conditions necessary to achieve steady-state flow. This ensures that users can replicate the conditions and obtain accurate measurements.

Enhance Your Expertise

By integrating the BS EN ISO 10070:2019 standard into your workflow, you can enhance your expertise in the field of metallic powders. This standard not only provides the technical foundation needed for accurate measurements but also supports the development of innovative solutions and improvements in product quality.

Conclusion

The BS EN ISO 10070:2019 is an indispensable resource for anyone involved in the analysis and application of metallic powders. Its comprehensive guidelines and detailed methodologies ensure that users can achieve the highest standards of accuracy and reliability in their work. Whether you are in research, development, or production, this standard is a valuable addition to your professional toolkit.

BS EN ISO 10070:2019

This standard BS EN ISO 10070:2019 Metallic powders. Determination of envelope-specific surface area from measurements of the permeability to air of a powder bed under steady-state flow conditions is classified in these ICS categories:

• 77.160 Powder metallurgy

This document specifies a method of measuring the air permeability and the porosity of a packed bed of metal powder, and of deriving therefrom the value of the envelope-specific surface area. The permeability is determined under steady-state flow conditions, using a laminar flow of air at a pressure near atmospheric. This document does not include the measurement of permeability by a constant volume method.

Several different methods have been proposed for this determination, and several test devices are available commercially. They give similar, reproducible results, provided that the general instructions given in this document are respected, and the test parameters are identical.

This document does not specify a particular commercial test device and corresponding test procedure. However, for the convenience of the user, an informative annex has been included (see Annex A) which is intended to give some practical information on three specific methods:

• the Lea and Nurse method, involving a test device which can be built in a laboratory (see A.1);

• the Zhang Ruifu method, using a similar test device (see A.2);

• the Gooden and Smith method, involving a test device which can be built in a laboratory but for which a commercial test device also exists. (Two types of commercial test device exist; one of these is no longer available for purchase, but is still being used, see A.3.)

These methods are given as examples only. Other test devices available in various countries are acceptable within the scope of this document.

This testing method is applicable to all metallic powders, including powders for hardmetals, up to 1 000 µm in diameter, but it is generally used for particles having diameters between 0,2 µm and 75,0 µm. It is not intended to be used for powders composed of particles whose shape is far from equiaxial, i.e. flakes or fibres, unless specifically agreed upon between the parties concerned.

This testing method is not applicable to mixtures of different metallic powders or powders containing binders or lubricant.

If the powder contains agglomerates, the measured surface area can be affected by the degree of agglomeration. If the powder is subjected to a de-agglomeration treatment (see Annex B), the method used is to be agreed upon between the parties concerned.