ASTM D822-96 - 10.7.2001
 
1. Scope

1.1 This practice covers the selection of test conditions for accelerated exposure testing of coatings and related products in filtered open-flame carbon-arc devices conducted according to Practices G 151 and G 152. This practice also covers the preparation of test specimens, the test conditions suited for coatings, and the evaluation of test results. describes commonly used test conditions.

Note 1--Previous versions of this practice referenced carbon-arc devices described by Practice G 23, which described very specific equipment designs. Practice G 23 has been withdrawn and replaced by Practice G 151, which describes performance criteria for all exposure devices that use laboratory light sources, and by Practice G 152, which gives requirements for exposing nonmetallic materials in filtered open flame carbon-arc devices.

1.2 This practice does not cover enclosed carbon-arc exposures of paints and related coatings, which is described in Practice D 5031. Another procedure for exposing these products is covered by Practice D 3361, in which the specimens are subjected to radiation from an unfiltered open-flame carbon arc that produces shorter wavelengths and higher levels of short wavelength radiation than filtered open-flame or enclosed carbon arcs.

1.3 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

D660-93(2019)

Standard Test Method for Evaluating Degree of Checking of Exterior Paints

D2616-25

Standard Test Method for Evaluation of Visual Color Difference With a Gray Scale

D3361-01

Standard Practice for Unfiltered Open-Flame Carbon-Arc Exposures of Paint and Related Coatings

D3980-88

Practice for Interlaboratoy Testing of Paint and Related Materials (Withdrawn 1998)

D4214-23

Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films

D5031-23

Standard Practice for Enclosed Carbon-Arc Exposure Tests of Paint and Related Coatings

D5870-22

Standard Practice for Calculating Property Retention Index of Plastics

E691-23

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

E1347-06(2020)

Standard Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry

G23-96

Practice for Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of Nonmetallic Materials (Withdrawn 2000)

G113-24

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

G141-09(2021)

Standard Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials

G147-24

Standard Practice for Conditioning and Handling of Materials for Natural and Artificial Weathering Tests

G151-26

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

G152-13(2021)

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

G169-01(2021)

Standard Guide for Application of Basic Statistical Methods to Weathering Tests

D662-93(2019)

Standard Test Method for Evaluating Degree of Erosion of Exterior Paints

D772-24

Standard Test Method for Evaluating Degree of Flaking (Scaling) of Exterior Paints

D823-18(2022)

Standard Practices for Producing Films of Uniform Thickness of Paint, Coatings and Related Products on Test Panels

D1005-95(2024)

Standard Test Method for Measurement of Dry-Film Thickness of Organic Coatings Using Micrometers

D1186-01

Standard Test Methods for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to a Ferrous Base (Withdrawn 2006)

D1400-00

Standard Test Method for Nondestructive Measurement of Dry Film Thickness of Nonconductive Coatings Applied to a Nonferrous Metal Base (Withdrawn 2006)

D1729-22

Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials

D714-25

Standard Test Method for Evaluating Degree of Blistering of Paints

D1730-09(2020)

Standard Practices for Preparation of Aluminum and Aluminum-Alloy Surfaces for Painting

D2244-25

Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates

D358-98

Standard Specification for Wood to Be Used as Panels in Weathering Tests of Coatings

D523-25

Standard Test Method for Specular Gloss

D609-17(2022)

Standard Practice for Preparation of Cold-Rolled Steel Panels for Testing Paint, Varnish, Conversion Coatings, and Related Coating Products

D610-25

Standard Practice for Evaluating Degree of Rusting on Painted Steel Surfaces

D659-86

Method of Evaluating Degree of Chalking of Exterior Paints (Withdrawn 1989)