ASTM D4587 PDF
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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Interlaboratory comparisons are valid only when all laboratories use the same design of fluorescent UV device, lamp, and exposure conditions.
Validating the specifications, value and safety of your raw materials, products and assets. The set points shown in this edition of D do not change the actual irradiances that have been historically used by these users. Originally approved in This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. C Previous editions of Practice D contained non-mandatory irradiance set points in Table 1 that were commonly used in the industry.
NOTE 9—An example of a statistical analysis using multiple laboratory and exterior exposures to calculate an acceleration factor is described by J.
Other irradiance levels may be used, but must be described in the report. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
However, for users of equipment made by another manufacturer, the irradiance control system did not have the measurement inaccuracies described above, so running at the new set points will represent a change in the actual irradiance of the test.
Obtain agreement between all concerned parties for the speci? Refer to Practice G for more information about the construction and differences between uninsulated and insulated black panels. dd4587
It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. Nondestructive instrumental measurements are recommended whenever possible. 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.
Do not place the apparatus near a heat source such as an oven. Link to Active This link will always route to the current Active version of the standard. 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. Refer to Practice G for detailed information on the caveats applicable to use of results obtained according to this practice.
F Typical UsesE Automotive coatingsF 2 Industrial maintenance coatingsG 3 Exterior wood coatings 4 General metal coatings A The cycles described are not listed in any order indicating importance, and are not necessarily recommended for the applications listed. A The cycles described are not listed in any order asym importance, and are not necessarily recommended for the applications listed. Conduct these round robins according to Practice E or D and include a statistically representative sample of all laboratories or organizations that would normally conduct the exposure and property measurement.
A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths. If in doubt, users should consult the manufacturer of their device for clarification. Auditing Consulting Sourcing Training. Refer to Practice G for detailed information on the caveats applicable to use of results obtained according to this practice.
Current edition approved July 1, Historical Version s – axtm previous versions of standard. C Previous editions of Practice D contained non-mandatory irradiance set points in Table 1 that were commonly used in the industry. 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 asstm control.
All specimens shall be exposed simultaneously in the same device. The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer.
D Temperature is at astmm for either an uninsulated or insulated black panel, although the response of the insulated black panel might be slower than that for the uninsulated black panel. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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?
Last previous edition approved in as D — Select panel sizes suitable for use with the exposure apparatus. The ability of a paint or coating to resist deterioration of its physical and optical properties caused by exposure to light, heat, and water can be very significant for many applications. In these cases, the agency that conducts the exposures cannot report results from property tests.
ASTM D classification test for weather and UV resistance
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Baked coatings Radiation-cured coatings All other coatings 24 h 24 h 7 days 5. The values given in parentheses are for information only.
Typically, flat plaques or disks are used for accelerated weathering studies. Thereafter the simulation, the GRP laminate is physically inspected and compared to a control specimen. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Send us a request Wilton UK: The values given in parentheses are for information only.