77.160 - Powder metallurgy

This document gives guidelines for the measurement of hardmetal grain size by metallographic
techniques only using optical or electron microscopy. It is intended for WC/Co hardmetals (also called
cemented carbides or cermets) containing primarily tungsten carbide (WC1)) as the hard phase. It is
also intended for measuring the grain size and distribution by the linear-intercept technique.
This document essentially covers four main topics:
— calibration of microscopes, to underpin the accurac...view more

This document specifies the methods of metallographic determination of the microstructure of
hardmetals using photomicrographs.

This document specifies the methods of metallographic determination of the microstructure of hardmetals using photomicrographs.

This document gives guidelines for the measurement of hardmetal grain size by metallographic techniques only using optical or electron microscopy. It is intended for WC/Co hardmetals (also called cemented carbides or cermets) containing primarily tungsten carbide (WC[1]) as the hard phase. It is also intended for measuring the grain size and distribution by the linear-intercept technique. This document essentially covers four main topics: — calibration of microscopes, to underpin the accuracy of...view more

EN-ISO 4497 specifies a method of determining the particle size distribution of metallic powders by dry sieving into size fractions.The method is applicable to dry, unlubricated metallic powders, but not applicable to powders in which the morphology differs markedly from being equiaxial, for example flake-type powders.The method is not applicable to metallic powders having a particle size wholly or mostly under 45 μm.

EN-ISO 13517 specifies a method for determining the flow rate of metallic powders, including powders for hardmetals and mixes of metallic powders and organic additives such as lubricants, by means of a calibrated funnel (Gustavsson flowmeter).The method is applicable only to powders which flow freely through the specified test orifice.

This document specifies a method for determining the flow rate of metallic powders, including powders for hardmetals and mixes of metallic powders and organic additives such as lubricants, by means of a calibrated funnel (Gustavsson flowmeter). The method is applicable only to powders which flow freely through the specified test orifice.

This document specifies a method of determining the particle size distribution of metallic powders by dry sieving into size fractions. The method is applicable to dry, unlubricated metallic powders, but not applicable to powders in which the morphology differs markedly from being equiaxial, for example flake-type powders. The method is not applicable to metallic powders having a particle size wholly or mostly under 45 µm.

This International Standard deals with technical specifications for metallic powders intended
to be used in additive manufacturing and covers the following aspects:
- Documentation and traceability
- Sampling
- Particle size distribution
- Chemical composition
- Characteristic densities
- Morphology
- Flowability
- Thermal characteristics
- Cleanliness
• Packaging and storage
This International Standard does not deal with safety aspects.
In addition, this International Standard give...view more

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 dev...view more

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 de...view more

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 dev...view more

This document specifies procedures for the sampling and testing of powder mixtures for the manufacture of hardmetals, using sintered test pieces. It also covers the preparation of test pieces.

This document specifies procedures for sampling and testing of hardmetals for the determination of their physical and mechanical characteristics.

This document specifies procedures for sampling and testing of hardmetals for the determination of their physical and mechanical characteristics.

This document specifies procedures for the sampling and testing of powder mixtures for the manufacture of hardmetals, using sintered test pieces. It also covers the preparation of test pieces.

This document defines terms relating to powder metallurgy. Powder metallurgy is the branch of metallurgy which relates to the manufacture of metallic powders, or of articles made from such powders with or without the addition of non-metallic powders, by the application of forming and sintering processes.

This document defines terms relating to powder metallurgy. Powder metallurgy is the branch of metallurgy which relates to the manufacture of metallic powders, or of articles made from such powders with or without the addition of non-metallic powders, by the application of forming and sintering processes.

This document specifies procedures for the sampling and testing of powder mixtures for the manufacture of hardmetals, using sintered test pieces. It also covers the preparation of test pieces.

This document specifies procedures for sampling and testing of hardmetals for the determination of their physical and mechanical characteristics.