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33-21-907 Micrograph

 

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;