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ASTM D 7856 : 2015 : REV A

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Specification for Color and Appearance Retention of Solid and Variegated Color Plastic Siding Products using CIELab Color Space
Superseded date

08-02-2021

Published date

12-30-2015

1.1This specification establishes requirements and test methods for the color and appearance retention of solid and variegated colored plastic siding products.

1.2Color retention testing provides a method for estimating the acceptability of color change in a plastic siding product over an extended period of service.

Note 1:The exposure locations and durations specified in this standard have been shown to provide a good estimation of the color change in vinyl and polypropylene siding products over an extended period of service (see 2.2). It is expected that materials designed for the exposure conditions typical of exterior siding will respond similarly, but the applicability of this standard to other types of plastic siding has not been empirically established.

1.3This specification is a successor to Specifications D6864 and D7251, which cover solid colors and variegated colors, respectively. This specification combines coverage for both, and has the same scope as those standards.

1.4Specifications D6864 and D7251 use Hunter Lab color space for measurement of colors and evaluation of color change. These standards require classification of colors into regions based on the L, a, and b coordinates of the color, and evaluation of color changes is done using an ellipsoid value equation having unique coefficients for each color region. This specification uses CIE 1976 L* a* b* color space for measurement and evaluation of color change. Using this method, the need for separate color regions and evaluation equations has been eliminated.

1.5Provisions for sample selection and preparation, and weathering are the same in this specification as in Specifications D6864 and D7251.

1.6Characterization of color and appearance for variegated colors is complicated by the presence of multiple colors in a random pattern. The procedure for measuring variegated colors in this specification is based on using a template to reference six spots for color measurement.

1.7This standard specifies outdoor weathering in three specific climate zones for a single 24-month exposure, and the color retention performance requirements under these conditions are established to be indicative of acceptable performance over an extended period of service. However, nothing in this standard precludes the use of different or additional climate zones, or different exposure durations, so long as those conditions are clearly specified in any reports.

1.8Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.9This 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 2:There is no known ISO equivalent to this standard.

Committee
D 20
DocumentType
Standard
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 1600 : 1999 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 7251 : 2009 Standard Specification for Color and Appearance Retention of Variegated Color Plastic Siding Products
ASTM D 7251 : 2011 Standard Specification for Color and Appearance Retention of Variegated Color Plastic Siding Products (Withdrawn 2018)
ASTM D 1435 : 2013 Standard Practice for Outdoor Weathering of Plastics
ASTM D 6864 : 2010 Standard Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products
ASTM E 1331 : 1996 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
ASTM D 2244 : 2021 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM E 1331 : 2015 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
ASTM D 6864 : 2011 Standard Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products (Withdrawn 2018)
ASTM D 2244 : 2015 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 2244 : 2011 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM E 29 : 2002 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM D 7251 : 2010 Standard Specification for Color and Appearance Retention of Variegated Color Plastic Siding Products
ASTM D 2244 : 2009 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 6864 : 2003 Standard Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products
ASTM D 2244 : 2002 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 2244 : 2016 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 6864 : 2003 : REV A Standard Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products
ASTM D 1600 : 2007 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 2244 : 2015 : EDT 1 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 2244 : 2009 : REV B Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 1600 : 2013 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 2244 : 2002 : EDT 1 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 1600 : 2014 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 6864 : 2003 : REV A : EDT 1 Standard Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products
ASTM D 7251 : 2006 Standard Specification for Color and Appearance Retention of Variegated Color Plastic Siding Products
ASTM D 2244 : 2015 : REV A Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 1600 : 2008 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 1435 : 1994 Standard Practice for Outdoor Weathering of Plastics
ASTM D 2244 : 2014 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 2244 : 2005 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 4214 : 1998 Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films (Withdrawn 2007)
ASTM E 1331 : 2004 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
ASTM D 7251 : 2006 : EDT 1 Standard Specification for Color and Appearance Retention of Variegated Color Plastic Siding Products
ASTM D 4214 : 2007 : R2015 Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films
ASTM D 4214 : 2007 Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films
ASTM D 1435 : 2005 Standard Practice for Outdoor Weathering of Plastics
ASTM D 1600 : 2018 Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
ASTM D 2244 : 2007 Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM E 1331 : 2009 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
ASTM E 1331 : 2015 : R2019 Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
ASTM D 6864 : 2003 : EDT 1 Standard Specification for Color and Appearance Retention of Solid Colored Plastic Siding Products
ASTM D 2244 : 2009 : REV A Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
ASTM D 2244 : 1993 : R2000 Standard Test Method for Calculation of Color Differences From Instrumentally Measured Color Coordinates
ASTM D 1435 : 1999 Standard Practice for Outdoor Weathering of Plastics

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