ASTM D4587 PDF

June 19, 2020 0 By admin

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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Historical Version s – view previous versions of standard. Work Item s – proposed revisions of this standard. 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. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.

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. Cautions Variation in results may be expected when different operating conditions are used. Therefore, no reference to the use of this practice shall atm made unless accompanied by a report prepared according to Section 10 that describes the specific operating conditions used.

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 according to this practice. 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 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 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. Interlaboratory comparisons are valid only when all laboratories use the same design of fluorescent UV device, lamp, and exposure conditions. 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.

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It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. Test results will depend upon the care that is taken to operate the equipment according to Practice G 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.

ASTM D classification test for weather and UV resistance

All references to exposures in accordance with this adtm must include a complete description of the test cycle used. This practice also covers the preparation of test specimens, and the evaluation of test results.

Table 1 describes commonly used test conditions. Note 1—Previous versions of this practice referenced fluorescent UV devices described by Practicewhich described atm specific equipment designs. 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.

The values given in parentheses are for information only. It is the responsibility of the user of this d45887 to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

A The cycles described are not listed in any order indicating importance, and are not necessarily recommended for the applications listed. Additional exposure cycles are described in Practice G B The irradiance set point given is typical for x4587 operated without irradiance control.

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Other irradiance levels may be used, but must be described in the report.

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C Previous editions of Practice D contained non-mandatory irradiance set points in Table 1 that were commonly used in the industry. The previous set points were 0.

The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer. The set points shown in this edition of D do not change the actual irradiances that have been historically used by these users. However, xstm 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 asmt.

If in doubt, users should consult the manufacturer of their device for clarification. D Temperature is at equilibrium 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.

Refer to Practice G for more information about the construction and differences between uninsulated and insulated black panels. 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.

G Historical convention has established this as a very commonly used test cycle. This cycle may not adequately simulate the effects of outdoor exposure. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Industrial maintenance coatings G.

Link to Active This link will always route to the current Active version of the standard.