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BS EN ISO 13805:2009
Vitreous and porcelain enamels for aluminium. Determination of the adhesion of enamels on aluminium under the action of electrolytic solution (spall test) (British Standard)
This International Standard specifies a test method for the accelerated determination of the resistance of porcelain enamel coatings on aluminium and aluminium alloys to spalling as a result of exposure to moisture or weathering. Because spalling is caused by the lack of adhesion between the coating and the base metal, the spall test is a test of adhesion. The greater the extent of spalling in this test, the greater the likelihood that the article will spall in service.
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British Standards Institution [bsi]
British Standards Institution [bsi]