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ISO 4969:1980
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Steel Macroscopic examination by etching with strong mineral acids
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
02-10-2018
English, French
01-02-1980
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.
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