This standard is issued under the fixed designation B; the 1 This test method is under the jurisdiction of ASTM Committee B08 on Metallic. ASTM B Standard Test Method for Measurement of Thickness of Anodic Coatings on Aluminum and of Other Nonconductive Coatings on Nonmagnetic. Find the most up-to-date version of ASTM B at Engineering
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Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts. Chemical conversion coatings are too thin to be measured by this test method. A way to determine if the basis metal thickness exceeds the critical thickness is to make measurements before and after backing up the basis metal with similar metal at least 3 mm mils thick.
Proven Structure M1 – Structure
Therefore, measurements made too near an edge or inside corner will not be valid unless the instrument is speci? A probe is placed directly on the coated surface in a perpendicular position and electronic circuitry is used to convert a reference signal into a coating thickness measurement.
Precision and Bias Kocour Company appreciates the opportunity to introduce you to our company. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
This standard has been approved for use by agencies of the Department of Defense. If not, either use the back-up method in 7. The characteristics of this secondary? Pioneers in the Plating Industry Since Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Analytical Testing Includes analytical test papers, solutions, reagents, indicators, plating test sets, and specialized measurements View All.
Both the test surface and instrument probe should be kept free of b2444 material. Website by Distant Horizon. Attention shall be given to the factors listed in Section 8 and to the procedures described in Section 9. Buffing and Polishing Includes abrasives, bar compound, buffing wheels, polishing lubricants, specialty compounds, buffing kits View All. Minimum order 15 pcs.
The values given in parentheses are for information only. Digital Rectifiers Kocour rectifiers are built to last. A number in parentheses indicates the year of last reapproval. Current edition approved April 15, Its value should be determined experimentally, if not supplied by the manufacturer of the measuring instrument, since it depends on both the measuring frequency of the probe system and the electrical conductivity of the basis metal.
There is no standard time interval for re-calibration, nor is one absolutely required, but a calibration interval can be established based on experience and the work environment. Material Safety Data Sheets.
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They may be coated aluminum plates, or may be foils or shims of? Last previous edition ast, in as B — 97 The effects of properties of the substrate composition, shape, roughness, edge effects, electrical properties and coating composition, mass, surface roughnessas well as ambient and asgm temperatures, may require adjustments to be made to the instrument. The eddy currents in turn create a secondary magnetic? If the roughness of the substrate surface is small, relative to the coating thickness, its effect will probably be negligible.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. NOTE 1—Although, theoretically, this test method can be used for measuring nonconductive coatings on a magnetic basis metal, its use for coatings below sstm General Laboratory General Laboratory.
Originally approved in Kocour Company is ranked first in the metal finishing industry, Kocour enjoys a worldwide reputation for high quality products and services for the Plating Industry. Give appropriate attention to the factors listed in Section 8.
ASTM B244 – 09(2014)
A one-year calibration interval is a typical frequency suggested by many instrument manufacturers. Resilient foils should be avoided if possible. 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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