ASTM G24

1.1 This practice evaluates the resistance of nonmetallic materials to solar radiation filtered through glass.

1.2 For direct exposures, refer to Practice G 7.

1.3 This practice is limited to the method of conducting the exposures. The preparation of test specimens and evaluation of results are covered in various standards for the specific materials.

1.4 Exposure conducted according to this practice can use two types of exposure cabinets.

1.4.1 Type AA cabinet that allows passive ventilation of specimens being exposed behind glass.

1.4.2 Type BEnclosed cabinet with exterior painted black that allows no ventilation of specimens exposed behind glass. Exposures conducted using a Type B cabinet are typically referred to as "black box under glass exposures."

1.5 Type A exposures of this practice are technically similar to Method B of ISO 877.

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.

2. Referenced Documents

C1036 Specification for Flat Glass
E1084 Test Method for Solar Transmittance (Terrestial) of Sheet Materials Using Sunlight
E824 Method for Transfer of Calibration from Reference to Field Pyranometers
E903 Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G173 Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37 Titled Surface
G177 Tables for Reference Solar Ultraviolet Spectral Distributions: Hemispherical on 37 Tilted Surface
G7 Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials
AATCC 16C Colorfastness to Light, Daylight
ISO 105 B01 Textiles-Tests for Colour Fastness, International Standards Organization, Geneva, Switzerland.
ISO 877 Plastics-Methods of Exposure to Direct Weathering, to Weathering Using Glass-Filtered Daylight, and to Intensified Weathering by Daylight Using Fresnel Mirrors, International Standards Organization, Geneva, Switzerland
WMO Guide to Meteorological Instruments and Methods of Observation WMO No. 8, Fifth Edition.

Index Terms

aging; exposure; glass; ultraviolet; weathering; ICS Number Code 59.080.01; 59.080.01

Citing ASTM Standards

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