![]() Generally too brittle for coinage use.Īn alloy of copper and silver, with more than Also known as Pinchbeck.Ī type of high tin bronze (around 22% tin) normally used in the manufacture of bells, butĪlso used in France at the time of the Revolution. (about 19% Zn) it is technically a brass. Pound and two pound coins by the Royal Mint.Ī type of cheap bronze used in the manufacture of some IrishĪnd American tokens, and for some coins of the Isle of man. The only example of which I am aware of the use of antimony for an issued coin is aĪ pattern in this metal of a penny, struck in 1860, has recently been put on saleīarton's Metal is in fact copper overlaid with a thick layer of gold,Īnd was used in 1825 during the reign of George IV for pattern five It is easily cast (melting at 631☌),Īnd gives a clear impression of the mould. Is thus an unlikely candidate for use in coins. 51, density 6.68 kg/litre, M.Pt 631☌Ī silvery metal which is very brittle, and is easily crushed and powdered, and It has a composition of 89% Cu, 5% Al, 5% Zn and 1% Sn.Īluminium Bronzes are popular as a coinage material as they are moreĬorrosion resistant than bronze, and have a distinctive colour.Īntimony Element (Sb), Atomic No. A modern example of its use is with the 5, 10 and 20Ī variety called Nordic Gold has been used for some Scandinavian coins,Īnd also for the new 10, 20 and 50 eurocent coins because it does not contain nickel. ![]() Sodum, potassum, chromum or titanum, do they? However, I gather that this tale isĬopper-aluminium alloys, with 5-11% aluminium as the main alloying addition, sometimes containing a small amount ofĬolour and hard wearing. Of aluminium started up in the US! After all, the Americans don't use the words Spelling was the consequence of a signwriter misspelling the word when the first producer There is an apocryphal story that the absence of the second letter i in the American In addition, aluminium is used as an importantĪlloying addition (see Aluminium Bronze). Magnesium is used to harden it and improve corrosion resistance. The pure metal is very soft, and so does not wear well. ![]() Recent examples include the tiny 1 peseta coin issued by Spain, Humphry Davy decomposed alumina to form an aluminium-iron alloy in about 1808.Ī very 'white' corrosion resistant metal used for cheapĬoins in a number of countries, particularly in Europe where inflation had decreased The metal was first prepared by Oersted in 1825 and Wohler in 1827, although METALS AND ALLOYS USED for Coins and MedalsĪluminum (UK spelling is Aluminium) Element (Al), Atomic No. The following materials are covered in this document: (Februand March 2 1992) entitled 'World's coinage uses 24 chemical elements' they are too numerous to mention individually.Īdditional information has been gleaned from an article published in World Coin News In 1960, and I also wish to acknowledge the help of many correspondents on the newsgroup Some (but by no means all) of the informationĬame out of 'The Teach Yourself Guide to Numismatics' by C.C.Chamberlain published ![]() We also had some gallium, but somebody left it above a radiator and it melted! Zirconium and titanium for superconducting, chemical and aeronautical applications. Research into alloys of such exotic materials as niobium, hafnium, tantalum, Subject, and it is also of interest to me as my first job involved carrying out When I was at University I gave a talk to the college Science Society on the This page details the various metals and alloys that have been used for coins and Metals Used in Coins and Medals Metals Used in Coins and Medals by Tony Clayton. ![]()
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