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A new ASTM standard will be useful to slide and engine companies, as well as makers of bushing materials, in studies that involve the measurement of system friction forces. The new standard, ASTM G203 , Guide for Determining Friction Energy Dissipation in Reciprocating Tribosystems, was developed by Subcommittee G02.50 on Friction, part of ASTM International Committee G02 on Wear and Erosion.…
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A newly approved ASTM International standard will advance the cause of architectural preservation. The new standard, ASTM C1713 , Specification for Mortars for the Repair of Historic Masonry, was developed by Subcommittee C12.03 on Specifications for Mortars, part of ASTM International Committee C12 on Mortars and Grouts for Masonry Units. John Wathne, structural engineer and president of…
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High-speed machine tool spindles and the high-pressure turbopumps that move liquid hydrogen in the space shuttle are just two examples of the uses for hybrid roller bearings. ASTM Subcommittee F34.01 on Rolling Element has now developed a standard for hybrid roller bearings, ASTM F2730/F2730M , Specification for Silicon Nitride Cylindrical Bearing Rollers. Subcommittee F34.01 is under the…
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Subcommittee G02.10 on Erosion by Solids and Liquids, part of ASTM International Committee G02 on Wear and Erosion, is interested in hearing from anyone who uses cavitation erosion testing in their work. The objective of this survey is to help the subcommittee determine the current degree of interest in and importance of cavitation erosion test methods. The subcommittee is especially interested…
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A new ASTM International standard that covers annular ball bearings intended primarily for use in instrument and precision rotating components has been developed as a conversion of a U.S. military standard, MIL-B-81793F, Annular Ball Bearings, for Instruments and Precision Rotating Components. The new standard, F 2332 , Specification for Annular Ball Bearings for Instruments and Precision…
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ASTM International Committee B08 on Metallic and Inorganic Coatings has recently approved a revision of one of its most important standards, B 633 , Specification for Electrodeposited Coatings of Zinc on Iron and Steel. B 633 is under the jurisdiction of Task Group B08.08.04 on Soft Metals, which is part of Subcommittee B08.08 on Metallic Coatings. Zinc coatings are used to provide a sacrificial…
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A task group of ASTM International Committee G02 on Wear and Erosion is seeking interested parties to participate in the revision of ASTM G 32, Test Method on Cavitation Erosion Using Vibratory Apparatus. The standard and the task group are under the jurisdiction of Subcommittee G02.10 on Erosion by Solids and Liquids. The task group is specifically seeking participants with any of the following…
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If you are a user of ASTM B 456, Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium and Nick Plus Chromium, ASTM International Committee B08 on Metallic and Inorganic Coatings would like to hear from you. B 456 is under the jurisdiction of Subcommittee B08.08.03 on Decorative Coatings. "Subcommittee B08.08.03 has received reports that some users are experiencing…
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ASTM International Committee F34 on Rolling Element Bearings is seeking participation in a new activity on measuring the cleanliness and wetability of bearing components. Because aerospace customers currently use many different methods of testing ball bearings, the goal of the activity is to work toward a consistent method for measuring cleanliness and wetability, as well as to analyze the…