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ASTM B136-84(1998)

Historical Reaffirmation

Standard Method for Measurement of Stain Resistance of Anodic Coatings on Aluminum

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1.1 This method is intended to determine whether anodic oxide coatings on aluminum and its alloys, that have undergone a sealing treatment and contact with an acid solution, are stainproof or nonadsorptive with respect to dyes.

1.2 Coatings that have been properly sealed should be proof against adsorption of coloring materials and, hence, "nonstaining" in many types of service.

1.3 This method is applicable to anodic coatings intended for applications where they are exposed to the weather, or for protective purposes in corrosive media, and where resistance to staining is important.

Note 1-Performance in this test is predictive only of susceptibility to stain by dyes. It is not intended to be predictive of other factors in service performance such as pitting or general corrosion. Note 2-For Aluminum Association Class I and II architectural anodic coatings that are sealed in solutions containing less than 15 ppm silicates or 3 ppm phosphates, the acid pretreatment may be omitted.

1.4 In the case of coatings colored in deep shades, where estimation of the intensity of any residual dye stain is difficult, interpretation of the test is based on whether or not the original color has been affected by the action of the test.

1.5 This method is not applicable to:

1.5.1 Chromic acid type anodic coatings.

1.5.2 Anodic coatings on aluminum alloys containing more than 2 mass% Cu or 4.5 mass% Si.

1.5.3 Anodic coatings that have been sealed only in dichromate solutions.

1.5.4 Anodic coatings that have undergone a treatment to render them hydrophobic.

1.6 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number B136
Publication Date Jan. 1, 1998
Language en - English
Page Count 2
Revision Level 84(1998)
Supercedes
Committee B08.07
Publish Date Document Id Type View
May 1, 2023 B0136-23 Revision
Oct. 1, 2018 B0136-84R18 Reaffirmation
May 1, 2013 B0136-84R13 Reaffirmation
April 1, 2008 B0136-84R08E01 Reaffirmation
Feb. 10, 2003 B0136-84R03 Reaffirmation
Jan. 1, 1998 B0136-84R98 Reaffirmation