How Much Does a Penny Weigh
The weight of the penny depends on three different factors: thickness, material composition, and diameter. Each coin has a different weight depending on its diameter, thickness, and different diameter. There is no certain weight that is certain for a coin. Varieties of materials are used to manufacture the coins. From gold and silver, precious metals to aluminum and steel, low-cost metals that are used in pennies.
The United States composition of coinage is determined by the US Congress and is approved by the President. According to the United State Coinage Act of April 2, 1792, the Treasury department directs the United States Mint on the manufacturing of coins. The coin composition is determined by the law passed by the US Congress and later approved by the president.
The United States had not adopted the metric system of commerce, the specification for the coin is given in grams for weight and for diameter in milligram. Though all the coins minted consist of thickness, diameter, and material. There is also a possibility of a slight difference in the process manufacturing that will lead to variance in coin. In other words, coins produced at a different time might vary slightly even if they are identical.
The United State’s Coins History
The United States manufactures one-cent coin that is 2.5 grams that has a tolerance of 0.1 grams. The diameter of the coin is 19.05 millimeters. It consists of 0.8 % copper, 0.003 inches of pure copper, and 99.2% zinc.
While the quantities and amount vary from time to time. From 1864 till 1982, 95% copper and 5% zinc. The coin weighed 3.11 grams with a tolerance of 0.13 grams. In 1982 half of the pennies were made of copper-plated zinc composition and half of the pennies were solid copper. In 1943 the Congress changed the composition to pure steel plated with zinc. The steel pennies started to rust quickly and in 1944 the decision was reversed and again copper and zinc alloy was used to manufacture coins.
The weight of Half a Dollar?
Since 1971 the United States half-dollar has been manufactured of 25% percent nickel and 75% copper with a diameter of 30.6 millimeters. With a tolerance of 0.454 the coins weigh 11.34.
From 1965 until 1970 the coin weighed 11.5 grams with 0.4 grams tolerance. It consists of 60% copper and 40% silver.
In 1794 the United States started producing silver dollars. The composition changed over time. Currently US mint Native American dollar series. With an outer layer of 775 copper, magnesium 7%, zinc 12%and nickel 4%. With a diameter of 26.5 millimeters, the weight of the coin is 8.1 grams.
The Susan B. Anthony dollar series included 75% copper and 25% nickel. With a diameter of 26.5 millimeters, the coin weighs 8.1 grams with 0.3 grams tolerance.
The Eisenhower dollar was the last of big dollars. The coin has a composition of copper-nickel. With a tolerance of 0.907 grams, the coin weighs 22.68. The diameter of the coin is 38.1 millimeters. From 1794 to 1935 all the silver dollars were composed of 10% copper and 90% silver. The coin weighed 26.956 with a diameter of 39.5 to 38.1 millimeters.
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