ASTM D1499 - 13

    Standard Practice for Filtered Open-Flame Carbon-Arc Exposures of Plastics

    Active Standard ASTM D1499 | Developed by Subcommittee: D20.50

    Book of Standards Volume: 08.01


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    ASTM D1499

    Significance and Use

    4.1 The ability of a plastic material to resist deterioration of its electrical, mechanical, 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.

    4.2 Cautions—Variation in results may be expected when operating conditions are varied within the accepted limits of this practice. Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared in accordance with Section 9 that describes the specific operating conditions used. Refer to Practice G151 for detailed information on the caveats applicable to use of results obtained in accordance with this practice.

    Note 2Additional 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 G141.

    4.2.1 The spectral power distribution of light from an open-flame carbon-arc is significantly different from that produced in light and water exposure devices using other carbon-arc configurations or other light sources. The type and rate of degradation and the performance rankings produced by exposures to filtered open-flame carbon-arcs can be much different from those produced by exposures to other types of laboratory light sources.

    4.2.2 Interlaboratory comparisons are valid only when all laboratories use the same type of carbon-arc, filters, and exposure conditions.

    4.3 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.5,6 Therefore, exposure of a similar material of known performance (a control) at the same time as the test materials is strongly recommended. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results.

    4.4 Test results will depend upon the care that is taken to operate the equipment in accordance with Practice G152. Significant factors include regulation of line voltage, freedom from salt or other deposits from water, temperature and humidity control, and conditions of the electrodes.

    1. Scope

    1.1 This practice covers specific procedures and test conditions that are applicable for exposure of plastics in filtered open-flame carbon-arc devices conducted in accordance with Practices G151 and G152. This practice also covers the preparation of test specimens, the test condition suited for plastics, and the evaluation of test results.

    1.2 This practice does not cover enclosed carbon-arc exposures of plastics, which had been allowed in Practice D1499. Enclosed carbon-arc exposures of plastics are described in Practice D6360, and in G153, which gives requirements for exposing nonmetallic materials in enclosed carbon-arc devices.

    1.3 The values stated in SI units are to be regarded as standard. The values in parentheses are given for information only.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

    Note 1This practice is technically equivalent to ISO 4892-4.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D3980 Practice for Interlaboratory Testing of Paint and Related Materials

    D5870 Practice for Calculating Property Retention Index of Plastics

    D6360 Practice for Enclosed Carbon-Arc Exposures of Plastics

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials

    G141 Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials

    G147 Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests

    G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources

    G152 Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

    G153 Practice for Operating Enclosed Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials

    G169 Guide for Application of Basic Statistical Methods to Weathering Tests

    ISO Standard

    ISO‚ÄČ4892-4 Plastics--Methods of Exposure to Laboratory Light Sources--Part 4, Open-Flame Carbon Arc Lamp


    ICS Code

    ICS Number Code 83.080.01 (Plastics in general)

    UNSPSC Code

    UNSPSC Code 81101801(Plastics engineering)


    DOI: 10.1520/D1499

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