Submitted by curator on Thu, 10/15/2015 - 17:33
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Inv. 31-17-205
Shafthole adze
A notch removed from the left side of the working edge; magnification, 200x
Etchant: Ammonium hydroxide + alcoholic ferric chloride
(Sn, 4.5%; As, 1.4%; Ni, 0.75%)
A description of the microstructure is in preparation.
Microhardness: VHN: 137 ± 13 (n=4)
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