ASTM D defines fluorescent UV and condensation exposures of paint and related coatings,equivalent to ISO This standard is issued under the fixed designation D; the number 1 This practice is under the jurisdiction of ASTM Committee D01 on Paint and. Related. ASTM D Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings CONTAINED IN VOL. , Outlines test.
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Table 1 describes commonly used test conditions. Need help or have a question? All specimens shall be exposed simultaneously in the same device.
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. Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance ranking compared to other materials or to a control.
Precision and Bias This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. The previous set points were 0. Obtain agreement between all concerned parties for the speci?
ASTM D – UV EXPOSURE OF PLATINGS
The standardized time period needs to consider conditioning prior to testing. Where retention of characteristic property is reported, calculate results according to Practice D This cycle may not adequately simulate the effects of outdoor exposure.
Work Item s – proposed revisions of this standard. Accelerated weathering simulates damaging effects of long term outdoor exposure of materials and coatings. Whether your awtm is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world.
Parts may be accommodated depending on size. A number in parentheses indicates the year of last reapproval. Assurance Testing Inspection Certification. Current edition approved July 1, A superscript epsilon e d457 an editorial change since the last revision or reapproval. NOTE 1—Previous versions of this practice referenced? Periods of Exposure and Evaluation of Zstm 9.
B The irradiance set point given is typical for devices operated without irradiance control.
Practice has been withdrawn and replaced by Practice G d44587, which describes performance criteria for all exposure devices that use laboratory light sources, and by Practice Gwhich gives requirements for exposing nonmetallic materials in fluorescent UV devices. 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.
Accelerated weathering provides exposed samples for comparison to unexposed control samples. NOTE 6—Since the stability of the? Practice G 53 has been withdrawn and replaced by Practice Gwhich describes performance criteria for all exposure devices that use laboratory light sources, and by Practice Gwhich gives requirements for exposing nonmetallic materials in fluorescent UV devices.
ASTM D classification test for weather and UV resistance
Note 1—Previous versions of this practice referenced fluorescent UV devices described by Practicewhich described very specific equipment designs. Do not place the apparatus near a heat source such as an oven. Interlaboratory comparisons are valid only when all laboratories use the same design of fluorescent UV device, lamp, and exposure conditions.
Adherence to the standard is mandatory across the GCC region and globally. 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. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.
The type and rate of degradation and the performance rankings produced in exposures to fluorescent UV lamps can be much different from those produced by exposures to other types of laboratory light sources.
The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer. Consider product use requirements when selecting appropriate methods.
Last previous edition approved in as D — Our glass reinforced polyester laminate is tested in a controlled laboratory with a simulation of accelerated weather with an exposure cycle of 8 hours UV followed by 4 hours condensation continuously. Send us a request Wilton UK: In these cases, the agency that conducts the exposures cannot report results from property tests. NOTE 3—Additional information on sources of variability and on strategies for addressing variability in the design, execution and data analysis of laboratory accelerated exposure tests is found in Guide G It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine asrm applicability of regulatory limitations prior to use.
However, performance comparisons under the controlled conditions of accelerated weathering can be compared to documented performance of materials and coatings that have experienced extended periods of end use exposure. NOTE 10—For some materials, changes may continue after the speci- Our laminate is type tested at the renowned international testing laboratory Exova to certify our products to be weather resistant.
All references to exposures in accordance with this practice must include a complete description of the test cycle used. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Note 3—Additional information on sources of variability and on strategies for addressing variability in the design, execution and data analysis of laboratory accelerated exposure tests is found in Guide G Do not use arbitrary acceleration factors relating time in an exposure conducted according to this practice and time in an outdoor environment because they can give erroneous information.
Other irradiance levels may be used, but must be described in the report. 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.
B The irradiance set point given is typical for devices operated without irradiance control. Control of ambient temperature is particularly critical when one apparatus is stacked above another, because the heat generated from the lower unit can interfere with the operation of the units above. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Significant factors include regulation of line voltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamps.