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ISO 4969:1980 [ Withdrawn ]
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ISO 4969:1980 Steel - Macroscopic examination by etching with strong mineral acids
standard by International Organization for Standardization, 02/01/1980
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Full Description
This macroscopic method has very wide application. Selection of the type and concentration of the reagent, the temperature of the reaction and the conditions of surface preparation of the test piece make it possible to achieve the required aim. Specifies general, principle, reagents, test piece, procedure, preservation of test pieces and test report.