50-cent piece (Canadian coin) History of composition History of composition

| Years | Weight | Diameter | Thickness | Composition |
|---|---|---|---|---|
| 2000–present | 6.9 g | 27.13mm | 1.95mm | 93.15% steel, 4.75% copper, 2.1% nickel plating |
| 1980–1999 | 8.10 g | 27.13mm | 1.9mm | 99.9% nickel |
| 1968–1979 | 8.10 g | 27.13mm | 1.93mm | 99.9% nickel |
| 1920–1967 | 11.66 g | 29.72mm | n/a | 80% silver , 20% copper |
| 1908–1919 | 11.62 g | 29.72mm | n/a | 92.5% silver, 7.5% copper |