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HS-31, HA-151, N-155 (Co alloys) - General macrostructure

Material Name: HS-31, HA-151, N-155 (Co alloys)
Recipe No.: 9513
Primary Chemical Element in Material: Co
Sample Type: Bulk
Uses: General macrostructure
Etchant Name: None
Type (Macro/Micro): Macro
Etching Method: Chemical
Etchant (Electrolyte) Composition: 50 ml HCl, 10 ml HNO3, 10 g FeCl3, 100 ml H2O.
Procedure (Condition): Swab sample until desired contrast is obtained.
Note: Good for general structure and grain size.
Reference: Vander Voort, Metallography Principles and Practice, McGraw-Hill, Inc., 1984, p. 514.