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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For a given basis metal, the higher the measuring frequency, the smaller the critical thickness of the basis metal. Your comments will receive careful consideration at a meeting of the responsible technical aetm, which you may attend. General Laboratory General Laboratory. Thickness Testing Includes coulometric modules and aztm, calibration standards, repair services, and replacement parts.

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

Proven Structure M1 – Structure

Digital Rectifiers Kocour rectifiers are built to last. If there is no difference between the readings, the critical thickness is exceeded.

NF6M Stand Versatile and simple with connecting cable and air agitation system. Analytical Testing Includes analytical test papers, solutions, reagents, indicators, n244 test sets, and specialized measurements. Standards suitable for many applications of the test method are commercially available and may be used provided the certi?

There asgm 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. With name recognition that is ranked first in the metal finishing industry, Kocour enjoys a worldwide reputation for high quality products and services.

A probe is placed directly on the coated surface in a perpendicular position and electronic circuitry is used to v244 a reference signal into a coating thickness measurement. 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.

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. They are advantageous for b2444 on curved surfaces, and v244 more readily available than coated standards. If not, either use the back-up method in 7. The values given in parentheses are for information only.

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They may be coated aluminum plates, or may be foils or shims of? Pioneers in the Plating Industry Since Chicago, IL Phone: 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.

Hull Cells The Kocour Hull Ast is unmatched for its sturdy construction, durability and ease of use. Kocour Company is asrm first in the metal finishing industry, Kocour enjoys a worldwide reputation for high quality products and services for the Plating Industry.

Because of this, and despite the use of special probes or? To those of you who are already Kocour customers, thank you.

Attention shall be given to the factors listed in Section 8 and to the procedures described in Section 9. Precision and Bias The eddy currents in turn create a secondary magnetic?

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Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts View All. 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. Made of 16 and 18 gauge CRS and powdercoated, our rectifiers are the “tanks” of the industry. Calibration and Standardization 7.

Your atsm are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Electroplating Includes agitators, hull cells, timers, anodes and cathodes, rectifiers, plater’s tape, and other plating accessories.

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

Originally approved in Analytical Testing Includes analytical test papers, solutions, reagents, indicators, plating test sets, and specialized measurements View All. 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?

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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 on a sample of the uncoated rough substrate. Material Safety Data Sheets. The effects of properties of the substrate composition, shape, roughness, edge effects, electrical properties and coating composition, mass, surface roughnessas well as ambient b2244 surface temperatures, may require adjustments to be made to aastm instrument.

b44

Buffing and Polishing Includes abrasives, bar compound, buffing wheels, polishing b2244, specialty compounds, buffing kits. 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. Both the test surface and instrument probe should be kept free of foreign material. A number in parentheses indicates the year of last reapproval.

Resilient foils should be avoided if possible. This standard has been approved for use by agencies of the Department of Defense.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? An adjustment will affect the outcome of subsequent readings. astj

Minimum order 15 pcs. 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. Website by Distant Horizon. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

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.