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Tin: Sn
The major constituent of all pewters. Pure tin is soft which
is why it needs to be mixed with other metals. Usually contains
between 90 and 98%
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Antimony:
Sb
Improves the casting qualities and has a considerable hardening
effect. Modern pewters generally contain between 0.5 and 8
%
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Copper:
Cu
Like antimony copper improves the casting qualities has a
slight hardening effect and helps retain the antimony in the
molten pewter, often present between 0.25 and 2.5%
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