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Although alkali resistant glass fibers have been commercially available for more than 30 years, there has not been an official standard that clearly defines what is required to make glass fibers resistant to alkali attack without the need for protective coatings. ASTM International Committee C27 on Precast Concrete Products has recently developed such a standard, C 1666/C 1666M , Specification…
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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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Ineffective removal of grease from restaurants poses a variety of serious environmental problems. Large quantities of grease in public sanitary sewer systems can cause stoppages of piping networks and create costly and time-consuming problems at treatment plants. Sewer backups resulting from grease can also create health hazards when raw sewage backs up into homes or businesses. While grease…
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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 F16 on Fasteners has recently approved an important new standard that deals with coated threaded fasteners and washers by hot-dip zinc galvanizing. The standard, F 2329, Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts and Special Threaded Fasteners, is under the jurisdiction of Subcommittee…
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During the past five years, certain insulating oils have been found to contain corrosive sulfur that can produce copper sulfide deposits as a function of time and temperature in operating equipment. A proposed revision to ASTM standard D 1275, Test Method for Corrosive Sulfur in Electrical Insulating Oils, will provide a means to certify that new or in service oils either contain or do not…
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ASTM International will launch a new Proficiency Testing Program (PTP) on Dissolved Gas Analyses (DGA) of In-Service Insulating Fluid in February 2006. The program will be offered to laboratories who need a statistical quality assurance tool that will enable them to improve and maintain a high level of performing ASTM standard D 3612, Test Method for Analysis of Gases Dissolved in Electrical…
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ASTM International Committee F16 on Fasteners has developed a new standard, F 2329, Specification for Zinc Coating, Hot-Dip, Requirements for Application to Carbon and Alloy Steel Bolts, Screws, Washers, Nuts, and Special Threaded Fasteners. The standard, which is under the jurisdiction of Subcommittee F16.03 on Coatings on Fasteners, covers the requirements for hot-dip zinc coating applied to…
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A proposed new specification currently being developed by ASTM Committee C27 on Precast Concrete Products addresses the issue of watertightness in septic tanks and grease interceptors. The proposed standard, WK7426, Specification for Resilient Connectors Between Reinforced Concrete Tanks and Pipes, is under the jurisdiction of Subcommittee C27.30 on Water and Wastewater Containers. "The entries…