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ISO 4538:1978
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ISO 4538:1978 Metallic coatings - Thioacetamide corrosion test (TAA test)
standard by International Organization for Standardization, 06/01/1978
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Full Description
This International Standard specifies the apparatus and the procedure for assessment of the resistance of metal surfaces to corrosion and tarnish in atmospheres containing volatile sulphides, carried out in accordance with coating or product specifications.
The method is applicable to the assessment of the efficacy of tarnish-preventing treatments applied to silver or copper and to the detection of discontinuities in precious metal coatings on these metals.