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Flow characteristics of fine metal powders are important in filling dies for pressing of powder metallurgy compacts, which are later sintered and sometimes machined into finished parts. The flow rate, as measured by a new ASTM standard, determines the flow necessary for a precise quantity of powder to be introduced into the die. The new standard, B964 , Test Methods for Flow Rate of Metal Powders…
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Two recently approved ASTM International standards provide user-friendly tests for properties of sintered metallurgy products. The new standards, developed by Subcommittee B09.04 on Bearings, are ASTM B962 , Test Methods for Density of Compacted or Sintered Power Metallurgy (PM) Products Using Archimedes’ Principle, and ASTM B963 , Test Methods for Oil Content, Oil-Impregnation Efficiency and…
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With the proposed new standard, WK11023 , Practice for Life and Reliability Testing Based on the Exponential Distribution, ASTM International Committee E11 on Quality and Statistics is continuing its program of preserving U.S. government military standards on acceptance sampling. WK11023 is an adaptation of the DoD quality control and reliability handbook document H-108, Sampling Procedures and…
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Plastic pipe and components are used with low pressure oxygen and enriched air for a variety of applications, including medical and healthcare, agriculture (fish farming), welding and fabrication, waste water treatment and others. Despite this widespread use, there are currently no standards that help in the materials selection and design features of these systems. ASTM International Committee…
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A new ASTM International standard, E 2555 , Practice for Factors and Procedures for Applying the MIL-STD-105 Plans in Life and Reliability Inspection, represents the latest work of a task group that is converting a series of old U.S. Department of Defense standards into ASTM documents. The task group is part of Subcommittee E11.30 on Data Analysis, which is under the jurisdiction of ASTM…
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A proposed new ASTM International standard, WK14507 , Guide for Selection of Security Fasteners for Detention and Correctional Facilities, will bring consistency to the use of security fasteners throughout detention/correctional facilities. WK14507 is under the jurisdiction of Subcommittee F33.04 on Detention Hardware, part of ASTM International Committee F33 on Detention and Correctional…
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A proposed new standard being developed by ASTM International Committee B09 on Metal Powders and Metal Powder Products offers a solution to the challenge of handling and characterizing very fine powders. Subcommittee B09.02 on Base Metal Powders is developing the proposed standard, WK13023 , Test Method for Determination of Tap Density of Metallic Powders by a Constant Volume Measuring Method. …
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ASTM International Committee E11 on Quality and Statistics has approved a new practice that describes methods for proficiency testing providers to use in analyzing laboratory results obtained in their programs. The standard, E 2489 , Practice for Statistical Analysis of One-Sample and Two-Sample Interlaboratory Proficiency Testing Programs, is under the jurisdiction of Subcommittee E11.20 on Test…
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Conventionally processed powder metallurgy materials often exhibit open microporosity at the surface. While it is a natural part of the process, this microporosity can affect the measurement of surface finishes. To cover this and other issues that arise from measuring the surface finish of powder metallurgy, ASTM International Committee B09 on Metal Powders and Metal Powder Products has developed…
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ASTM International Committee G04 on Compatibility and Sensitivity of Materials in Oxygen Enriched Atmospheres originally developed the standard, G 88, Guide for Designing Systems for Oxygen Service, in 1984. Since that time, G 88 has been regarded as one of the leading design guides for oxygen systems throughout all industries that use oxygen. While the original version of the standard contained…