History of Composition
| Years | Mass | Diameter/Shape | Composition |
|---|---|---|---|
| 2000–present | 3.95 g | 21.2 mm, round | 94.5% steel, 3.5% copper, 2% nickel plating |
| 1982–1999 (some production until 2006) | 4.6 g | 21.2 mm, round | 75% copper, 25% nickel |
| 1963–1981 | 4.54 g | 21.21 mm, round | 99.9% nickel |
| 1955–1962 | 4.54 g | 21.21 mm, 12-sided | 99.9% nickel |
| 1951–1954 | 4.54 g | 21.21 mm, 12-sided | chrome-plated steel |
| 1946–1951 | 4.54 g | 21.21 mm, 12-sided | 99.9% nickel |
| 1944–1945 | 4.54 g | 21.21 mm, 12-sided | chrome-plated steel |
| 1942–1943 | 4.54 g | 21.21 mm, 12-sided | 88% copper, 12% zinc ("tombac") |
| 1922–1942 | 4.54 g | 21.21 mm, round | 99.9% nickel |
| 1920–1921 | 1.167 g | 14.494 mm, round | 80% silver, 20% copper |
| 1858–1919 | 1.167 g | 14.494 mm, round | 92.5% silver, 7.5% copper |
Read more about this topic: Nickel (Canadian Coin)
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