ASTM D4329 PDF

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ASTM D tests for fluorescent UV exposure of plastics. It covers specific procedures and test conditions based on practices ASTM G and ASTM G This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D on Plastics. ASTM D – Designation: D – 05 Standard Practice for Fluorescent UV Exposure of Pla.

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Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market d432 the world. Standards can be obtained from appropriate standard authorities.

Historical Version s – view previous versions of standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Formally confirming that your products and services meet all trusted external and internal standards. Control of ambient temperature is particularly critical when one apparatus is stacked above another, because the heat generated from c4329 lower unit can interfere with the operation of the units above.

Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. This practice also covers the preparation of test specimens, the d432 conditions best suited for plastics, and the evaluation of test results.

If you feel that your asym have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Do not use arbitrary acceleration factors relating time in an exposure conducted in accordance with this practice and time in an outdoor environment because they can give erroneous information.

Accelerated weathering provides exposed samples for comparison to unexposed control samples. Operate the device continuously.

Accelerated Weathering (QUV) ASTM G154, ASTM D4329, ASTM D4587, ISO 4892

Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice. The values given in brackets are for information only. Therefore, no reference to the use of this practice should be made unless accompanied by a report prepared in accordance with Section 8 that describes the specic operating conditions used.

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Measure ambient temperature at a maximum distance of mm [6 in. Validating the specifications, value and safety of your raw materials, products and assets. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.

Accelerated Weathering (QUV) ASTM G, ASTM D, ASTM D, ISO

Warning— Variation in results may be expected when operating conditions are varied within the accepted limits of this practice. When a single exposure period is used, select a time or radiant exposure that will produce the largest performance differences between the test materials or between the test material and the control material.

NOTE 4—This is especially important when mechanical properties are being investigated. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Attach porous specimens to a solid backing such as aluminum that can act d43329 a vapor barrier. Last previous edition approved in as Astn – 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.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Misleading results may be obtained by this method, since the masked portion of the specimen is still exposed to temperature and humidity cycles that in many cases will affect results.

ASTM D | Rycobel

Calculate retention of characteristic property in accordance with Practice D when it is reported. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Send us a request Need help or have a question? Therefore, no reference to the use of this practice should be made unless accompanied by a report prepared in accordance with Section 8 that describes the specific operating conditions used.

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The acceleration factor is materialdependent and is only valid if it is based on data from a sufficient number of separate exterior and laboratoryaccelerated exposures so that results used to relate times to failure in each exposure can be analyzed using statistical methods. Periods of Exposure and Evaluation of Test Results 8. Signicance and Use 4. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Obtain mutual agreement between all concerned parties for the specic exposure cycle used. Send us a request Wilton UK: This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.

Need help or have a question? This method is preferred over evaluating materials after an arbitrary exposure time or radiant exposure.

ASTM D4329

Moisture asm provided by forced condensation, and temperature is controlled by heaters. Measurements visual or instrumental should be made within a standardized time period or as agreed upon between the interested parties. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results.

Certification Formally confirming that your products and services meet all trusted external and internal standards. Warning— Variation in results may be expected when operating conditions are varied within the accepted limits of this practice.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. All specimens shall be exposed simultaneously in the same device.

This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results. Instrumental measurements are recommended whenever possible.