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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Current edition approved April 15, They are advantageous for adjustments on curved surfaces, and are more readily available than coated standards. Asm values given in parentheses are for information only. 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.

ASTM B244 – 09(2014)

Resilient foils should be avoided if possible. Made of 16 and 18 gauge CRS and powdercoated, our rectifiers are the “tanks” of the industry. Analytical Testing Includes analytical test papers, solutions, reagents, indicators, astk test sets, and specialized measurements. NF6M Stand Versatile and simple with connecting cable and air agitation system. 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.

Kocour Company is ranked first in the metal finishing industry, Kocour enjoys a worldwide reputation for wstm quality products and services for the Plating Industry. A one-year calibration interval is a typical frequency suggested by many instrument axtm.

If the roughness of the substrate surface is small, relative to the coating thickness, its effect will probably be negligible. Material Safety Data Sheets. With name recognition that is ranked first in the metal finishing industry, Kocour enjoys a worldwide reputation for high quality products and services. To those of you who are already Kocour customers, thank you.

Digital Rectifiers Kocour rectifiers are built to last. Minimum order 15 pcs. Because of this, and despite the use of special probes or? 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.


Its value should be determined experimentally, if not supplied by the manufacturer atsm 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? The awtm of this secondary? Factors Affecting the Measuring Accuracy 8. Nonmagnetic Coatings on Magnetic Basis Metals 3.

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. Website by Distant Horizon. Attention shall be given to the factors listed in Section 8 and to the procedures described in Section 9.

If there is no difference between the readings, the critical thickness is exceeded. To those of you who have not purchased from us, you may be pleasantly surprised at the range of products designed, manufactured, and maintained with quality and performance in mind. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Electroplating Includes agitators, hull cells, timers, anodes and cathodes, rectifiers, plater’s tape, and other plating accessories View All.

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. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Summary of Test Method 4. The eddy currents in turn create a secondary magnetic? 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. Buffing and Polishing Includes abrasives, bar 2b44, buffing wheels, polishing lubricants, specialty compounds, buffing kits View All. Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts.


An adjustment will affect the b2244 of subsequent readings. 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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If the basis metal is rough it may also be necessary to check, and adjust if necessary, the zero of the instrument at several positions satm a sample of the uncoated rough substrate. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

Allow weeks delivery. A number in parentheses indicates the year of last reapproval. Give appropriate attention to the factors listed in Section 8. Analytical Testing Includes analytical test papers, solutions, reagents, indicators, asstm test sets, and specialized measurements View All.

Proven Structure M1 – Structure

This standard has been approved for use by agencies of the Department of Defense. Hull Cells The Kocour Hull Cell is unmatched for its sturdy construction, durability and ease of use. 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.

Last previous edition approved in as B — 97 Foils are subject to indentation and should, therefore, be replaced frequently. For a given basis metal, the higher the measuring frequency, the smaller the critical thickness of the basis metal.

Standards asrm for many applications of the test method are commercially available and may be used provided the certi? Therefore, measurements made too near an edge or inside corner will not be valid unless the instrument is speci? If not, either use the back-up method in 7.

They may be coated aluminum plates, or may be foils or shims of?