John Coles' article on Bronze Age shields, (1962, in
the PPS) argues that there is little difference in the
hardness of cold worked sheet copper and bronze, on a
practical functional level. To my understanding,
c.10% tin bronze can achieve up to twice the hardness
of copper, but that data comes from cast artefacts
(mainly swords).
Does anybody know if sheet bronze can be worked to a
similar hardness as swords or axes, or is the very
nature of thin sheets too restrictive for sufficient
periods of working?
Thanks a lot,
Barry Molloy.
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