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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The spectral power distribution of light from fluorescent UV lamps is significantly different from that produced in light and water exposure devices using other light sources.
Historical Version s – view previous versions of standard. The type and rate of degradation and the performance rankings produced in exposures to? In devices that do not have a planar exposure area, reposition specimens using a procedure agreed upon by all interested parties. Select panel sizes suitable for use with the exposure apparatus. The protective gelcoat serves as the first line of defense outdoors against weathering and UV exposures in extreme hot and cold climates.
Often several exposure times such as, and hours also will be compared to each other. An exposure time that produces a signi?
Nondestructive methods are preferred because panels so measured need not be repaired. If in doubt, users should consult the manufacturer of their device for clarification. Asgm previous edition approved in as D — Where is it tested?
ASTM D classification test for weather and UV resistance
A The cycles described are not listed in any order indicating astn, and are not necessarily recommended for the applications listed. Practice has been withdrawn and replaced by Practice Gwhich describes performance criteria for all exposure devices that use laboratory light sources, and by Practice Gwhich gives awtm for exposing nonmetallic materials in fluorescent UV devices.
The values given in parentheses are for information only. This cycle may not adequately simulate the effects of outdoor exposure.
E Typical uses do not imply that results from exposures of these materials according to the cycle described will correlate to those from actual use conditions. 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. Standards can be obtained from appropriate standard authorities. Certification Formally confirming that your products and services meet all trusted external and internal standards.
G Historical convention has established this as a very commonly used d487 cycle. 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 around sstm world. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. Additional exposure cycles are described in Practice G However, d587 users of equipment d45887 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.
ASTM D – UV EXPOSURE OF PLATINGS
Originally approved in Other irradiance levels may be used, but must be described in the report. 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.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Work Item s – proposed revisions of this standard. This condition requires that the procedures described in 8. Up to 20 test samples are mounted in the QUV and subjected to a cycle of exposure to intense ultraviolet radiation followed by moisture exposure by condensation. Precision and Bias Moisture is provided by forced condensation, and temperature is controlled by heaters.
Current edition approved July 1, Our glass reinforced polyester laminate, which is the primary material across our product range is constructed with a protective layer of gelcoat having a high thickness of – microns. 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.
Seal any holes in specimens larger than 2 mm 0. These cycles would be continued for extended periods of time – up to thousands of hours – simulating even longer periods of time in the real world. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. 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.
Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared according to Section 10 that describes the specific operating conditions used.
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Test results will depend upon the care that is taken to operate the equipment according to Practice G The previous set points were 0. All specimens shall be exposed simultaneously in the same device. 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?
Measurements visual or instrumental should be made within a standardized time period or as agreed upon between interested parties. This practice also covers the preparation of test specimens, and the evaluation of test results. All references to exposures in accordance with this practice must include a complete description of the test cycle used. Industrial maintenance coatings G. ASTM International is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services.
Link to Active This link will always route to the current Active version of the standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.