Submitted by curator on Fri, 10/16/2015 - 19:07
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Inv. 33-21-907 Field # H3854 Spearhead or Dagger Context: CH75 X13 A cut at the edge of the most fragmented part of the blade; magnification, 400x Etchant: Ammonium hydroxide + hydrogen peroxide + alcoholic ferric chloride (As, 0.70%; Sn, <0.013%; Ni, <0.015%)
A description of the microstructure is in preparation.
Microhardness VHN: 134 ± 5 (n=5) Uniform;
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