Manganese is essential to iron and steel production by virtue of its sulfur-fixing, deoxidizing, and alloying properties.
manganese - iron - cobalt
Fe
Ru
Full table
General
Name, Symbol, Number iron, Fe, 26
Chemical series transition metal
Group, Period, Block 8 (VIIIB), 4 , d
Density, Hardness 7874 kg/m
..... Click the link for more information.
Wartime nickel Those five-cent coins struck during World War II comprised of 35% silver, 9% manganese, and 56% copper. Tradition has been that nickel was needed for the war effort, hence the metallic change.
Although golden in color, they are made of a combination of copper and manganese brass. For a picture click here. Saint-Gaudens - Augustus Saint-Gaudens was a well know artist and coin designer of the early 1900's.
090 manganese (1942-45) Edge: Plain. During the wartime of 1942-1945 a special minting composed of a silver alloy (56% copper, 35% silver and 9% manganese) was issued in order to conserve critically short supplies of nickel essential to the war ...
The coin's physical makeup is a three-layer composite construction - pure copper sandwiched between and metallurgically bonded to outer layers of manganese brass.
These coins are 56% copper, 35% silver and 9% manganese. These coins are usually a bit darker than regular nickels, due to their manganese content.
It will be made of a copper-zinc-manganese-nickel clad copper alloy. The surface of the coin will be treated a little differently to slow the tarnishing process which was a big criticism of the Sacagawea dollar coin.
Most modern coins are being made of metals other than silver or gold, such as Cupro-nickel (around 80:20, silver in colour), nickel-brass (copper 75%, nickel 5% and zinc 20%, gold in colour), manganese-brass (copper, zinc manganese and nickel), ...
golden dollar: Term used by the U.S. Mint to describe the manganese-brass clad composition used for the Sacagawea, Presidential and Native American dollars. Contains no gold content.
War is hell, especially on money. Metal was scarce during World War II. Just ask a Jefferson nickel, made of 56% copper, 35% silver and 9% manganese (the Sacagawea Dollar US silver coin also uses manganese).
Five-cent coins struck during World War II with the composition 56% copper, 35% silver, and 9% manganese. Historic legend has it that the metallic change was driven by a need for nickel to be used in the war effort.
Warnicks War nickels. Between 1942 and 1945 a special silver/manganese alloy was used in our five-cent pieces, copper and nickel being needed for wartime purposes.
Wartime nickel: the U.S. Five Cents pieces struck from 1942 to 1945 in which silver and manganese was substituted for Nickel.
Washington Quarter Dollar: the U.S. Quarter Dollars struck from 1932 until today.
The metallic composition of the coin is complex: a pure copper core is clad with layers of metallurgically bonded outer layers of manganese brass. It weighs 8.1 grams and has a diameter of 26.5 mm.
Was Her Name Really Sacagawea?: ...
These are designated by a large mintmark above Monticello on the reverse and are composed of silver, manganese, and copper. These are the first U.S. coins to have a Â"PÂ" mintmark to indicate their being struck at the Philadelphia Mint.
Wartime Silver - Coinage metal for 5¢ pieces, October 1942 to December 1945, consisting of 35% silver, 56% copper, 9% manganese.
Whizzing - Giving a coin a false surface fraudulently simulating mint bloom, generally by wire brush or the like.
From that date, and lasting through the end of 1945, five-cent pieces bore the regular design but were minted from an alloy of copper, silver and manganese.
Alloy
A mixture of two or more metals, e.g. the Sacagawea Dollar is comprised of an alloy of .770 copper, .120 zinc, .070 manganese, and .040 nickel.
Authorized by the United States Coin Act of 1997, the Golden Dollar will replace the Susan B. Anthony dollar coin. Its most distinctive features include its golden color (a three-layer "clad" system of manganese, brass and copper), wide border, ...
Wartime Silver - Coinage metal for 5¢ pieces, October 1942 to December 1945, consisting of 35% silver, 56% copper, 9% manganese.
35% silver, 9% manganese, and 56% copper. As of this writing they are worth more than five cents due to their silver content.
For the entire war, they put silver in the nickels. The silver (the overall content is 35%) was combined with manganese to replace nickel needed for the war effort. The silver gives it a very different look and some people claim, a different feel.
During WWII, nickel and copper were designated as critical strategic metals. It was during this time that the U.S. Mint changed the metal content of our five-cent pieces to a silver and manganese alloy. See also: STEELIES ...
From 1942 through 1945, because of nickel shortages during World War II, the Jefferson "nickel" was made without any nickel at all. It was composed of copper (56%), silver (35%), and manganese (9%).
738, Manganese 7.2 to 7.45 depending upon form, Nickel 8.902, Palladium 12.02, Platinum 21.45, Silicon 2.33, Silver 10.50, Tin (gray) 5.75, Tin (white) 7.30, Titanium 4.54, Tungsten 19.30, Zinc 7.133.
Act of Congress on March 27, 1942, the new alloy for the nickel was adopted: 35%
silver, 56% copper and 9% manganese. These new "wartime silver nickels"
were issued from October 1942 through December 1945.
Between 1942 and 1945 a special silver/manganese alloy was used in our five-cent pieces, copper and nickel being needed for wartime purposes.
 See also: Copper, Nickel, Coin, Silver, Dollar
  
|
RSS
