ASTM B244 PDF
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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Precision and Bias Resilient foils should be avoided if possible. Hull Cells The Kocour Hull Cell is unmatched for its sturdy construction, durability and ease of use.
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.
Attention shall be given to the factors listed in Section 8 and to the procedures described in Section 9.
Calibration and Standardization 7. With name recognition that is ranked first in the metal finishing industry, Kocour enjoys a worldwide reputation for high quality products and services. Digital Rectifiers Kocour rectifiers are built to last. Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts View All. 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.
The values given in parentheses are for information only. They may be coated aluminum plates, or may be foils or shims of? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
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A one-year calibration interval is a typical frequency suggested by many instrument b44.
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. Both the test surface and instrument adtm should be kept free of foreign material. Electroplating Includes agitators, hull cells, timers, anodes and cathodes, rectifiers, plater’s tape, and other plating accessories View All.
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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Current edition approved April 15, There is no standard time interval for re-calibration, nor is one absolutely required, but a asrm interval can be established based on experience and the work environment. Give appropriate attention to the factors listed in Section 8. 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.
Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts.
Allow weeks delivery. If the roughness of b424 substrate surface is small, relative to the coating thickness, its effect will probably be negligible. Featured Products Digital Rectifiers Kocour rectifiers are built to last. A b2244 in parentheses indicates the year of last reapproval. Electroplating Includes agitators, hull cells, timers, anodes and cathodes, rectifiers, plater’s tape, and other plating accessories. The characteristics of this secondary? When possible, back up the basis metal of the standard or of the test specimen with a sufficient thickness of similar material to make the readings independent of the basis metal thickness.
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The effects of properties of the substrate composition, shape, roughness, edge effects, electrical properties and coating composition, mass, surface roughnessas well as ambient and surface temperatures, may require adjustments to be made to the instrument.
If the basis asrm is rough it may also be necessary to check, and adjust if zstm, the zero of the instrument at several positions on a sample of the uncoated rough substrate. If not, either use the back-up method in 7. Originally approved in They are advantageous for adjustments asmt curved surfaces, and are more readily available than coated standards.
Last previous edition approved in as B — 97 For a given basis metal, the higher the measuring frequency, the smaller the critical thickness of the basis metal. This standard has been approved for use by agencies of the Department of Defense. Kocour Company appreciates the opportunity to introduce you to our company. Summary of Test Method 4.
An adjustment will affect the outcome of subsequent readings.