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30-17-201 Micrograph

 

Inv. 30-17-201
Shafthole adze
From lower edge of socket; magnification, 200x
Etchant: Ammonium hydroxide + hydrogen peroxide + alcoholic ferric chloride
(Sn, <0.024%; As, 2.9%; Ni, 3.0%)

A description of the microstructure is in preparation.

Microhardness: VHN: 94 ± 6 (n=5)
Uniform;