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ASTM grain size is a property written into many specifications for metals, with finer grain sizes generally indicating better mechanical properties, such as formability. While measuring certain materials for such properties can be difficult, electron backscatter diffraction can provide precise determinations as well as give information on grain size distribution and statistics. A new ASTM…
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A recent revision to ASTM International standard E384 , Test Method for Knoop and Vickers Hardness of Materials, expands the range of its coverage. The standard is under the jurisdiction of Subcommittee E04.05 on Microindentation Hardness Testing, part of ASTM International Committee E04 on Metallography. The revision incorporates ASTM E92 , Test Method for Vickers Hardness of Metallic Materials…
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Providing practical advice on the use of infrared thermometers is the purpose of a proposed new ASTM International standard. Infrared thermometry is used in a variety of measurement applications, including heating, ventilating and air conditioning, building inspection, industrial and manufacturing, automotive and food service equipment. The proposed new standard, ASTM WK21204 , Guide for the…
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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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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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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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A former military standard has become the basis for a new ASTM standard developed by Committee E11 on Quality and Statistics. The new standard, E 2234, Practice for Sampling a Stream of Product by Attributes Indexed by AQL, will be the first in a series based on a now-withdrawn set of military documents on sampling. Practice E 2234, presently under the jurisdiction of Subcommittee E11.10 on…