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.
Current edition approved July 1, A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths. 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.
The type and asgm of degradation d4578 the performance rankings produced in exposures to? 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.
Measure ambient temperature adtm a maximum distance of mm 6 in. 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.
F SAE J describes the test used in many automotive speci? The previous set points were 0. 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. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. B The irradiance set point given is typical for devices operated without irradiance control.
E Typical uses do d457 imply c4587 results from exposures of these materials according to the cycle described will correlate to those from actual use conditions. F Typical UsesE Automotive coatingsF v4587 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.
It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. The standardized time period needs to consider conditioning prior to testing. Industrial maintenance coatings G.
Do not use this covered area of the specimen as part of ashm test area. Typically, flat plaques or disks are used for accelerated weathering studies.
Obtain agreement between all concerned parties for the speci? 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. A number in parentheses indicates the year of last reapproval. The values given in parentheses are for information only. Other irradiance levels may be zstm, but must be described in the report.
ASTM D _UV_resistance_百度文库
It is the responsibility of the user of this standard to establish appropriate safety and d4857 practices and determine the r4587 of regulatory limitations prior to use. A superscript epsilon e indicates an editorial change asstm the last revision or reapproval. Additional intervals and periods of condensation may be substituted upon agreement among the concerned parties. 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.
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 the world. In devices that do not have a planar exposure area, reposition specimens using a procedure agreed upon by all interested parties. Send us a request Wilton UK: The e4587 set points were 0. 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 requirements for exposing nonmetallic materials in fluorescent UV devices.
This condition requires that the procedures described in 8.
Assurance Testing Inspection Certification. 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.
Note 1—Previous versions of this practice referenced fluorescent UV devices described by Practicewhich described very specific equipment designs. 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 NOTE 10—For some materials, changes may continue after the speci- Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A The cycles described are not listed in any order indicating importance, and are not necessarily recommended for the applications listed. Moisture is provided by forced condensation, and temperature is controlled by heaters. Accelerated weathering provides exposed samples for comparison to unexposed control samples.
Consider product use requirements when selecting appropriate methods. Additional exposure cycles are described in Practice G Expose replicates of the test specimen and the control specimen so that statistically signi?
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. Where is it tested? Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer.