Aluminium alloys-1xxx series alloys

Material: Aluminium alloys
Type: Micro
Method: Chemical etching
Etchant (Electrolyte): 20 ml H2SO4 (conc.), 80 ml water.
Procedure: Immerse at 70 C (158 F) for 30 s; rinse in cold water.
Note: 1xxx series alloys. Examination for identification of constituents.
Source: Metallography, Structures and Phase Diagrams, Metals Handbook, 8th Edition, Vol. 8, ASM (American Society for Metals), Metals Park, Ohio 44079, USA, 1973, p. 124.

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