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Iron and steels - Chemical etching

Material Name: Iron and steels
Recipe No.: 10510
Primary Chemical Element in Material: Fe
Sample Type: Bulk
Uses: General microstructure
Etchant Name: None
Type (Macro/Micro): Micro
Etching Method: Chemical
Etchant (Electrolyte) Composition: 80 ml distilled water, 20 g NaOH, 4 ml bromine.
Procedure (Condition): Use fresh, under a hood. Handle carefully. Use by immersion of sample.
Note: Special etchant. Colors Fe3P. Portevin.
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1984, p. 634.