https://en.numista.com/forum/topic65390.html
Part 2 (Part one was the silver coin topic, now it is time to list
Lets start!
Aluminium
Germany 1 pfennig 1916 - 0.78g
Perpignan 5C - 0.7g
British west africa 1/10Penny - 1g
Perpignan 10C (Octagonal!) - 1.03g
Perpignan 20C - 1.2g
Gard 25C - 1.25g
Algeria 5C Chamber of com. - 1.4g
Besancon 10C (Square coin!) - 1.44g
Marseille 10C - 2.116g
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Iron
Poland 1 fenig - 1.75g
Germany 5 pfennig - 2.5g
Poland 5 fenigow - 2.53g
Austria-Hungary 2 heller - 2.7g
Hungary 2 filler - 2.78g
Bayonne 5C - 2.8g
Germany 1 kopek - 2.9g
Hessen-nassau 10 pfennig - 3.2g
Austria-Hungary 20 heller - 3.5g
Poland 10 fenigow - 3.56g
Germany 10 pfennig - 3.6g
Rhine 10 pfennig - 3.8g
French notgeld 10C - 4g
Poland 20 fenigow - 4g
Algeria 5C Chamber of com. - 4.7g
Rhine 5 pfennig - 5.25g
Germany 2 kopek - 5.8g
Germany 3 kopek - 8.7g
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Copper-nickel
Costa rica 2C - 1g
Guatemala ¼ real - 1.1g
Colombia 2½C - 1.2g
British west africa 1/10 penny - 1.9g
East africa ½ penny - 1.9g
USA 3C - 1.94g
Bulgaria 2½ stotinki - 1.98g
Argentina 5C - 2g
Colombia 1 peso - 2g
Crete 5 lepta - 2g
Dominican republic 2½C - 2g
Equador ½C - 2g
Jamaica 1 farthing - 2g
Paraguay 5C - 2g
Switzerland 5 rappen - 2g
Uruguay 1C - 2g
Guatemala ½ real - 2.3g
Venezuela 1C - 2.3g
Venezuela 5C - 2.3g
Germany 5 pfennig - 2.33g
Belgian congo 5C - 2.5g
Bolivia 5C - 2.5g
Cuba 1C - 2.5g
El salvador 1C - 2.5g
Luxembourg 5C - 2.5g
Panama 1C - 2.5g
Portugal 50 reis - 2.5g
Réunion 50C - 2.5g
Haiti 5C - 2.6g
East africa 1 penny - 2.88g
Luxembourg 10C - 2.95g
Argentina 10C - 3g
Belgium 5C - 3g
Bulgaria 5 stotinki - 3g
Colombia 2C - 3g
Colombia 5C - 3g
Crete 10 lepta - 3g
Equador 1C - 3g
France 5C - 3g
Greece 10 lepta - 3g
Paraguay 10C - 3g
Romania 5 bani - 3g
Serbia 5 para - 3g
Switzerland 10 rappen - 3g
German east africa 5 heller - 3.13g
El salvador 3C - 3.3g
North borneo 1C - 3.3g
Cuba 2C - 3.5g
Uruguay 2C - 3.5g
British honduras 5C - 3.6g
Guadeloupe 50C - 3.6g
Haiti 10C - 3.65g
Germany 10 pfennig - 3.8g
Crete 20 lepta - 3.89g
Ceylon 5C - 3.9g
Egypt 2 milliemes - 3.9g
British india 1 anna - 3.9g
France 10C - 3.98g
Argentina 20C - 4g
Belgian congo 10C - 4g
Bulgaria 10 stotinki - 4g
Greece 10 lepta - 4g
Italy 20C - 4g
Kiau chau 10C - 4g
Paraguay 20C - 4g
Portugal 100 reis - 4g
Serbia 10 para - 4g
Guatemala 1 real - 4.1g
Peru 1C - 4.3g
Réunion 1 franc - 4.48g
Belgium 10C - 4.5g
Romania 10 bani - 4.5g
Danish west indies 5C - 4.5g
USA 1C - 4.67g
Egypt 5 milliemes - 4.75g
Martinique 50C - 4.8g
North borneo 2½C - 4.9g
Bolivia 10C - 5g
Bulgaria 20 stotinki - 5g
Cuba 5C - 5g
Equador 5C - 5g
Netherlands east indies 5C - 5g
Nicaragua 5C - 5g
Panama 2½C - 5g
Philippines 5C - 5g
USA 5C - 5g
Uruguay 5C - 5g
Venezuela 12½C - 5g
British west africa ½ penny - 5.5g
Guadeloupe 1 franc - 5.6g
Jamaica ½ penny - 5.6g
Serbia 20 para - 5.6g
German east africa 10 heller - 5.84g
Belgian congo 20C - 6g
Egypt 10 milliemes - 6g
Germany 20 pfennig - 6.25g
East africa 5 penny - 6.4g
Romania 20 bani - 6.9g
France 25C - 7g
North borneo 5C - 7.3g
Haiti 20C - 7.5g
Martinique 1 franc - 8g
Jamaica 1 penny - 9g
Haiti 50C - 9.73g
Brazil 100 reis - 9.8g
East africa 10 penny - 11.3g
Brazil 200 reis - 14.1g
British west africa 1 penny - 15.5g
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Nickel
Austria 10 heller - 3g
Austria 20 heller - 3g
Hungary 10 filler - 3g
Montenegro 10 para - 3g
Hungary 20 filler - 4g
Montenegro 20 para - 4g
Switzerland 20 rappen - 4g
Germany 25 pfennig - 4.02g
Italy 25C - 4.15g
Netherlands 5C - 4.5g
Greece 20 lepta - 5g
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Bonus:
Porcelain
Saxony 20 pfennig - 1.5g
Saxony 50 pfennig - 1.9g
Saxony 1 sachsen - 3g
Saxony 2 sachsen - 7.08g
(1921)