A lot of the early (and later) copper alloys were all over the map,
metallurgically. Lead was a common addition to the Copper-Tin to
alter the casting behavior and malleability. I know that in many
medieval items that have been analyzed, the lead content runs 2 to 8
According to the book Swords and Hilt Weapons by Michael Coe, et.
al. (ISBN 1-56619-249-8),
Swords and Hilt Weapons
early bronze weapons were cast, and likely finished out by stock
removal, there was little evidence of either hot or cold forging
except for possible work hardening of the edges.
Ron Charlotte -- Gainesville, FL
@Ron_Charlotte1 OR email@example.com