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Description of ASTM-B530 2009ASTM B530 - 09Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Electrodeposited Nickel Coatings on Magnetic and Nonmagnetic SubstratesActive Standard ASTM B530 | Developed by Subcommittee: B08.10 Book of Standards Volume: 02.05 ASTM B530Significance and Use The thickness of a coating is often critical to its performance. This magnetic method is suitable for measuring nondestructively the thickness of some nickel coatings and for specification acceptance. This method requires that the magnetic properties of the coating and its substrate be the same as those of the reference standards used for the calibration adjustment of the instrument. 5.3 This method should not be used to determine the thickness of autocatalytically deposited nickel-phosphorus alloys containing more than 8 % phosphorus on steel. Those coatings are sufficiently nonmagnetic for Test Method B 499 to be suitable for that determination, as long as the measurement is made prior to any heat treatment. 1. Scope 1.1 This test method covers the use of magnetic instruments for the nondestructive measurement of the thickness of an electrodeposited nickel coating on either a magnetic or nonmagnetic substrate. It is intended to supplement manufacturers instructions for the operation of the instruments and is not intended to replace them. 1.2 These instruments measure either the magnetic attraction between a magnet and the coating-substrate combination (categorized as magnetic pull-off ), or the change in magnetic flux density within the probe (categorized as electronic ). 1.3 For this test method, there are two types of coating-substrate combinations that can be encountered: Type A, nickel coatings on a magnetic substrate, and Type B, nickel coatings on a nonmagnetic substrate. 1.4 The effective measuring ranges of instruments using the principle of magnetic attraction are up to 50 ? m (2 mils) for Type A coatings, and up to 25 ? m (1 mil) for Type B coatings. For gages based on change in magnetic flux density principles, the effective ranges are much greater, and measurements up to 1 mm (40 mils) or more, can be made on both types of coatings. 1.5 Measurements made in accordance with this test method will be in compliance with the requirements of ISO Standard 2361 as printed in 1982. 1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.7 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 and health practices and determine the applicability of regulatory limitations prior to use.
ISO International Standard ISO2361 Electrodeposited Nickel Coatings on Magnetic and Nonmagnetic Substrates--Measurement of Coating Thickness--Magnetic Method Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.ASTM Standards B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section B499 Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals B504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method B748 Test Method for Measurement of Thickness of Metallic Coatings by Measurement of Cross Section with a Scanning Electron Microscope Keywords coating thickness; magnetic method; nickel coatings; nondestructive thickness; thickness; thickness testing; Magnetic materials/applications; Magnetic testing--coating thickness; Nickel coatings; Nondestructive evaluation (NDE)--metallic/inorganic coatings; Nonmagnetic coatings; Surface analysis--electrodeposits/electroplating; Thickness--electrodeposited coatings; Base-metal substrates; Coating thickness; Electrodeposited Ni coatings; Instrumental measurement--electrodeposited coatings; ICS Code ICS Number Code 17.040.20 (Properties of surfaces); 25.220.40 (Metallic coatings) DOI: 10.1520/B0530-09 ASTM International is a member of CrossRef. ASTM B530The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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