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ASTM B499-09(2014)
Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
STANDARD published on 1.5.2014
The information about the standard:
Designation standards: ASTM B499-09(2014)
Note: WITHDRAWN
Publication date standards: 1.5.2014
SKU: NS-6928
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM B499-09(2014) :
Keywords:
coating thickness, coatings, magnetic method, nondestructive thickness, nonmagnetic coatings, plating thickness, thickness, thickness testing, ICS Number Code 17.040.20 (Properties of surfaces)
Additional information
| Significance and Use | ||||
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5.1 The thickness of a coating is often critical to its performance. For most nonferrous coatings on steel, the magnetic method is reliable for measuring coating thickness nondestructively and is suitable for specification acceptance testing and SPC/SQC applications. 5.2 This test method should not be used to determine the thickness of electrodeposited nickel coatings on steel. Test Method B530 is suitable for that determination. |
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| 1. Scope | ||||
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1.1 This test method covers the use of magnetic instruments for the nondestructive measurement of the thickness of nonmagnetic coatings over ferrous or other magnetic base metals. 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 basis metal, as
influenced by the presence of the coating (categorized as “magnetic
pull-off”), or the change in magnetic-flux density within the probe
(categorized as “electronic”). These instruments cannot distinguish
the thickness of individual layers. They can only measure the
cumulative thickness of all layers beneath the probe down to the
base metal.
1.3 Measurements made in accordance with this test method will be in compliance with the requirements of ISO International Standard 2178 as printed in 1982. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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. |
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| 2. Referenced Documents | ||||
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