ASTM D4414 PDF

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Already Subscribed to this document. Most protective and high performance coatings are applied to meet a requirement or specification for dry film thickness for each coat or for the completed coating system, or for both. The substrate surface may also be examined for ‘drag’ marks left by the teeth or notches to confirm the values read from the notches or teeth. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Such a gage is applicable to coatings on flat substrates and to coatings on articles of various sizes and complex shapes where it is possible to get the end tabs of the gage to rest in the same plane on the substrate.

Consequently, the results from the notch gage are not to be used to verify the nonvolatile content of wstm coating. Correction of the film after it has dried or chemically cured requires costly extra labor time, may lead to contamination of the film, and may aztm problems of adhesion and integrity of the coating system. If quick drying coatings are to be measured, quickly perform your measurements to avoid asstm that may be caused by curing.

Such a gage is applicable to coatings on flat substrates and to coatings on articles of various sizes and complex shapes where it is possible to get the end tabs of the gage to rest in the same plane on the substrate.

The mode of operation is similar to measuring ‘wet’ coatings. Wait several seconds to allow the teeth or notches of the gauge to become ‘wetted’ by the coating, then withdraw the gauge vertically keeping it at ninety degrees to the substrate.

WFT Gauge can also be used to measure powder coating thickness before it goes through curing. Measuring Powder Coatings The thickness of dry powder coatings may also be measured with these type of gauges. Always specify Stainless Steel or disposable plastic and WFT gauge number requirements in your order.

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You may delete a document from your Alert Profile at any time. Such a gage is applicable to coatings on flat substrates and to coatings on objects of various sizes and complex shapes. The values given in parentheses are for information only. Teeth or notches are machined into the sides of the gauge.

How to Use a ‘Wet Film Thickness’ Gauge

Be sure to clean the gauge with an appropriate solvent after use. All the other teeth or notches on the same side are of shorter lengths than the outside teeth or notches and represent different distances from the outside edge zero datum teeth.

Wet film thickness is measured to determine the correct dry coating thickness.

Instructions On How To Use A ‘Wet Film Thickness Gauge’ Place the wet film thickness gauge at ninety degrees to the coated substrate and penetrate the surface of the coating with the notched or toothed side of the gauge until the substrate is firmly contacted. These gauges meet the requirements of the following International Standards: These gauges are also commonly known as: How to Use a ‘Wet Film Thickness’ Gauge Wet Film Thickness Gauges are designed to quickly and easily measure the thickness of coatings immediately after they have been applied to a substrate.

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.

This standard is also available to be included in Standards Subscriptions. The teeth or notches of the gauge should be ‘dragged’ at ninety degrees through the coating and the thickness of the powder will lie between the values of the smallest tooth or notch that has powder ‘clinging’ to it and the largest tooth or notch that has no powder ‘clinging’ from it.

Model D441 Gauges The gauges are precision manufactured from hardened grade atm steel. The thickness of powder type coatings may also be measured before curing. These gauges will survive harsh use, the graphics will not rub off even sanding the gauge will not remove the graphics, numbers, etc.

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.

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This standard is not included in any packages. These gauges are not designed as ‘throw-away’ items and should not be compared to gauges that are ‘printed’ or silk-screened. The overall size of the gauges is 2. D4441 wet film thickness WFT of the 4d414 lies between the values of the smallest un-coated dry tooth or notch and the largest coated wet tooth or notch.

The teeth or notches on each side of the gauge are referenced to each other. The gauges are precision manufactured from hardened grade stainless steel. Add to Alert PDF. All markings and graphics are etched and black filled. The wet film thickness of most organic coatings aastm paints, resins, lacquers, varnishes, gel coat, etc. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

The teeth or notches are graduated in MILS 0. Box Syracuse, NY U. The values given in parentheses are for information only. A ‘drag’ mark would indicate that the tooth or notch should have coating ‘clinging’ to it.

ASTM D – 95() – Standard Practice for Measurement of Wet Film Thickness by Notch Gages

Disposable plastic wft gauge is designed for once only use, simply place in the wet paint note the wet paint thickness, Allow paint to dry and retain for future ISO record d4414 customer requirements. Link to Active This link will always route to the current Active version of the standard.

The gauges incorporate a series of notches cut into their sides much like the teeth on a comb. Your Alert Profile lists the documents that will be monitored. Examples of such items are ellipses, thin edges, and corners. Manufacturing and Office Location: The gauge may now be read to determine the wet film thickness. S4414 some flat coatings the dry film thickness is higher than that calculated from the wet film thickness.

Each gauge has eight different measurement notches.