Throughout its long history   Pewter has had an almost infinite variety of compositions, even today there are still numerous variety’s produced. The only common factor is a relatively high tin content, which is hardened by additions of other elements. In most countries newly manufactured Pewter is a lead free alloy usually being hardened with additions of antimony and copper containing over 90% tin. Other elements such as silver and bismuth are sometimes used in the past Pewter often contained lead but as awareness has grown into the harmful effects of lead it should now have been eliminated. Modern Pewter can be polished to bright silver like finish or if preferred chemical darkness can be used to stimulate the patinas associated with old Pewter compositions. Suitable to a variety of types casting and objects. Most of the Pewter we supply destined to be cast into vulcanised rubber moulds which are spun so that centrifugal force helps to fill the modal cavity and eject any air. We supply a variety of compositions for this type of casting which are selected of compositions for this type of casting which are selected to suit the of items being cast..

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The main constituents of modern lead free Pewter  

Tin: S N

The major constituents of all Pewter’s. Pure tin is soft which is why it needs to be mixed with other metals. Usually contains between 90% and 98%.

Antimony: S B

Improves the casting quantities and has a considerable hardening effect. Modern Pewter’s generally contain between 0.5 and 8%.

Copper: C U

Like antimony copper improves the casting quantities has a slight hardening effect and helps retain the antimony in the molten Pewter, often present between 0.25 and 2.5%.

    Pewter is made by melting ...

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