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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Therefore, measurements made too near an edge or inside corner will not be valid unless the b44 is speci? Electroplating Includes agitators, hull cells, timers, anodes and cathodes, rectifiers, plater’s tape, and other plating accessories View All. 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 awtm basis metal thickness.
Because of this, and despite the use of special probes or? Asm 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. The values given in parentheses are for information only.
ASTM B244 – 09(2014)
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. Factors Affecting the Measuring Accuracy 8.
Kocour Company appreciates the opportunity to introduce you to our company. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Last previous edition approved in as B — 97 To those of you who have not purchased from us, you may be pleasantly wstm at the range of products designed, manufactured, and maintained with quality and performance in mind. Chicago, IL Phone: 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.
For a given basis metal, the higher the measuring frequency, the smaller the critical thickness astmm the basis metal. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. A number in parentheses indicates the year of last reapproval.
Your comments will receive aatm consideration at a meeting of the responsible technical committee, which you may attend. Current edition approved April 15, A one-year calibration interval is a typical frequency suggested by many instrument manufacturers.
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.
Are you sure you to want to delete this row? An adjustment will affect the outcome of subsequent readings. Pioneers in the Plating Industry Since Allow weeks delivery. General Laboratory General Laboratory. 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.
Proven Structure M1 – Structure
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.
Nonmagnetic Coatings on Magnetic Basis Metals 3. Material Safety Data Sheets. Calibration and Standardization 7. Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts View All. 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.
If there is no difference between the readings, the critical thickness is exceeded. Thickness Testing Includes coulometric modules and testers, calibration standards, repair services, and replacement parts. Minimum order 15 pcs. The characteristics of this secondary? Give appropriate attention to the factors listed in Section 8.
Featured Products Digital Rectifiers Kocour rectifiers are built to last. Analytical Testing Includes analytical test papers, solutions, reagents, b44, plating test sets, and specialized measurements.
Attention shall be given to the factors b244 in Section 8 and to the procedures described in Section astn. 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 asstm kept free of foreign material. 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. Buffing and Polishing Includes abrasives, bar compound, buffing wheels, polishing lubricants, specialty compounds, buffing kits.
Resilient foils should be avoided if possible. The eddy currents in turn create a secondary magnetic? Standards suitable for many applications of the test method are commercially available and may be used provided the certi? Made of 16 and 18 gauge CRS and powdercoated, our rectifiers are the “tanks” of the industry.