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Artifact ID BT 853/1634
Class wire/rod
Material copper-base
Site Ban Tong
Period Early Period

Provenience Status/Description Metallography Elemental/Hardness
Alloy: impure copper
Where Cut: cross section of shaft
How Mounted: lengthwise
Structure: Post-casting treatment
Metallographic description: Very small grains with annealing twins. The specimen is very "dirty," with many dark, rough, irregular inclusions and a few blue-gray inclusions. The dark inclusions are lined up in the same direction, though the annealing twins are straight and no strain marks were seen. The dark inclusions are not copper oxide. This is an impure copper. Worked, annealed, possibly several times. The last act was an anneal.
BT 853/1634<br>Cross section diameter=0.2 cm. Round cross section. One and possibly both ends have been bent back to form small loops.
BT 853/1634<br>Cross section diameter=0.2 cm. Round cross section. One and possibly both ends have been bent back to form small loops.

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