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ASTM etchant No. 137 - Pure Ni and high Ni alloys

Material Name: Pure Ni and high Ni alloys
Recipe No.: 4547
Primary Chemical Element in Material: Ni
Sample Type: Bulk
Uses: Electrolytic polishing
Etchant Name: ASTM etchant No. 137
Type (Macro/Micro): Micro
Etching Method: Electrolytic
Etchant (Electrolyte) Composition: 10 g sodium nitrate, 100 cm3 water.
Procedure (Condition): CD: 0.2 A/cm2.
Note: Pure Ni and high Ni alloys.
Reference: Fred Hargreaves (Ret.), Personal Etchants Database 1960-1990, Analytical Services Bookham Technology, Caswell, Towcester, Northamptonshire NN8EQ, UK.