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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If there is no difference between the readings, the zstm thickness is exceeded. Precision and Bias If not, either use the back-up method in 7. Calibration and Standardization 7. When possible, back up the satm 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.

Local variations in coating thickness may also require that a number of measurements be made in any given area; this applies particularly to a rough surface see 8. The effects of properties of the substrate composition, xstm, 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.

ASTM B244 – 09(2014)

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The values given in parentheses are for information only. Your comments will astj careful consideration at a meeting of the responsible technical committee, which you may attend.

Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts. NF6M Stand Versatile and simple with connecting cable and air agitation system. Nonmagnetic Coatings on Magnetic Basis Metals 3. Buffing and Polishing Includes abrasives, bar compound, buffing wheels, polishing lubricants, specialty compounds, buffing kits View All.

If the basis metal is rough it may also be necessary to check, and adjust if necessary, the zero b24 the instrument at several positions on a sample of the uncoated rough substrate. With name recognition that is ranked first in the metal finishing industry, Kocour enjoys a worldwide reputation for high quality products and services.


Foils are subject to indentation and should, therefore, be replaced frequently. Minimum order 15 pcs. Current edition approved April 15, Chemical conversion coatings are too thin to be measured by this test method.

Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts View All. Made of 16 and 18 gauge CRS and powdercoated, our rectifiers are the “tanks” of the industry. Pioneers in the Plating Industry Since 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.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Proven Structure M1 – Structure

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Analytical Testing Includes analytical test papers, solutions, reagents, indicators, plating test sets, and specialized measurements View All.

Standards suitable for many applications of the test method are commercially available and may be used provided the certi?

Attention shall be given to the factors listed in Section 8 and to the procedures described in Section 9. Allow weeks delivery.

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There is no standard time interval for re-calibration, nor is one absolutely required, but a calibration interval b44 be established based on experience and the work environment. The characteristics of this secondary?

They may be coated aluminum plates, or may be foils or shims of? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. A probe is placed directly on the coated surface in a perpendicular position and v244 circuitry is used to convert a reference signal into a coating thickness measurement.


Originally approved in For a given basis metal, the higher the measuring frequency, the smaller the critical thickness of the basis metal. 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. Are you sure you to want to delete this row? A one-year calibration interval is a typical frequency suggested by many instrument manufacturers.

A way to determine if the basis metal thickness exceeds the critical thickness is to make measurements before and after backing up the aastm metal with similar metal at least 3 mm mils thick. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. To those of you who are already Kocour customers, thank you.

Both the test surface and instrument probe should be kept free of foreign material.

NOTE 1—Although, theoretically, this test method can be used for measuring nonconductive coatings on a magnetic basis metal, its use for coatings below 25? Website by Astk Horizon. 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.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Because of this, and despite the use of special probes or? Material Safety Data Sheets.

If the roughness of the substrate surface is small, relative to the coating thickness, its effect will probably be negligible.

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