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Standard Test Method for Measurement of Thickness of Anodic Coatings on Aluminum and of Other Nonconductive Coatings on Nonmagnetic Basis Metals with Eddy-Current Instruments
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NORM herausgegeben am 1.4.2021
Bezeichnung normen: ASTM B244-09(2021)
Ausgabedatum normen: 1.4.2021
SKU: NS-1024036
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
coating thickness, coatings, eddy current, nonconductive coatings, thickness, thickness testing, nondestructive thickness, anodic coatings,, ICS Number Code 17.040.20 (Properties of surfaces)
Significance and Use | ||
5.1?The thickness of a coating is often critical to its performance. This eddy-current method is nondestructive and is suitable for measuring the thickness of anodic coatings on aluminum, as well as the thickness of most nonconductive coatings on nonmagnetic basis metals. 5.2?This test method requires that the conductivity of the substrate be the same in the reference standard used for calibration adjustment and in the coated article to be measured. |
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1. Scope | ||
1.1?This test method covers the use of eddy-current instruments for the nondestructive measurement of the thickness of a nonconductive coating on a nonmagnetic basis metal. It is intended to supplement manufacturers instructions for the operation of the instruments and is not intended to replace them. 1.2?This test method is particularly useful for measuring the thickness of an anodic coating on aluminum alloys. Chemical conversion coatings are too thin to be measured by this test method. 1.3?The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||
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