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Encyclopedia > Cupronickel

Cupronickel is an alloy of copper, nickel and strengthening impurities, such as iron and manganese. Cupronickel does not corrode in seawater, because its electrode potential is adjusted to be neutral with regard to seawater. Because of this it is used for marine hardware, and sometimes for the propellers, crankshafts and hulls of premium tugboats, fishing boats and other working boats. An alloy is a combination, either in solution or compound, of two or more elements, at least one of which is a metal, and where the resulting material has metallic properties. ... General Name, Symbol, Number copper, Cu, 29 Chemical series transition metals Group, Period, Block 11, 4, d Appearance metallic pinkish red Standard atomic weight 63. ... General Name, Symbol, Number nickel, Ni, 28 Chemical series transition metals Group, Period, Block 10, 4, d Appearance lustrous, metallic and silvery with a gold tinge Atomic mass 58. ... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Standard atomic weight 55. ... General Name, Symbol, Number manganese, Mn, 25 Chemical series transition metals Group, Period, Block 7, 4, d Appearance silvery metallic Atomic mass 54. ... This article may be too technical for most readers to understand. ... Annual mean sea surface temperature for the World Ocean. ... A boat is a craft or vessel designed to float on, and provide transport over, water. ...


A common use is in many silver-coloured modern circulation coins. A typical mix is 75% copper, 25% nickel, and a trace amount of manganese. In the past true silver coins were debased with cupronickel. General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Atomic mass 107. ... A coin is usually a piece of hard material, generally metal, usually in the shape of a disc, and most often issued by a government, to be used as a form of money in transactions. ... Debasement is the practice of lowering the value of currency. ...


It is used in thermocouples, and a 55% copper/45% nickel alloy is used to make very accurate resistors. In electronics, thermocouples are a widely used type of temperature sensor and can also be used as a means to convert thermal potential difference into electric potential difference. ... Resistor symbols (non-European) Resistor symbols (Europe, IEC) A pack of resistors A resistor is a two-terminal electrical or electronic component that resists an electric current by producing a voltage drop between its terminals in accordance with Ohms law. ...


Monel metal is a copper-nickel alloy, containing up to 65% nickel. Monel is a trademark comprising a series of rustless (stainless) metal alloys, primarily composed of nickel (up to 67%) and copper, with some iron and other trace elements. ...


See also bronze (copper alloyed with tin), brass (copper alloyed with zinc), and nickel silver (another group of copper-nickel alloys). Assorted ancient Bronze castings found as part of a cache, probably intended for recycling. ... General Name, Symbol, Number tin, Sn, 50 Chemical series poor metals Group, Period, Block 14, 5, p Appearance silvery lustrous gray Standard atomic weight 118. ... Brass is any alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses, each of which has unique properties[1]. Note that in comparison bronze is principally an alloy of copper and tin. ... General Name, Symbol, Number zinc, Zn, 30 Chemical series transition metals Group, Period, Block 12, 4, d Appearance bluish pale gray Atomic mass 65. ... Nickel silver is a metal alloy of copper with nickel and often but not always zinc. ...


History

Cupronickel coin of king Pantaleon c. 170 BCE. Obv: Bust of Dionysos with a wreath of leaves. Rev: Panther with a small bell around the neck, touching a vine with the left leg. Greek legend: BASILEOS PANTALEONTOS "King Pantaleon".
Cupronickel coin of king Pantaleon c. 170 BCE.
Obv: Bust of Dionysos with a wreath of leaves.
Rev: Panther with a small bell around the neck, touching a vine with the left leg. Greek legend: BASILEOS PANTALEONTOS "King Pantaleon".

The cupronickel alloy technology has been known by the Chinese since the 3rd century BC under the name 'White copper' (some weapons from the Warring States Period were in copper-nickel alloy 1). Coin of Pantaleon. ... Coin of Pantaleon. ... Pantaleon (reigned c. ... (Redirected from 170 BCE) Centuries: 3rd century BC - 2nd century BC - 1st century BC Decades: 220s BC 210s BC 200s BC 190s BC 180s BC - 170s BC - 160s BC 150s BC140s BC 130s BC 120s BC Years: 175 BC 174 BC 173 BC 172 BC 171 BC - 170 BC - 169... Bacchus by Caravaggio Dionysus, the name of a god, is occasionally confused with one of several historical figures named Dionysius. ... A melanistic black jaguar, or black panther The black panther is the common name for a black specimen (a melanistic variant) of any of several species of cats. ... This article or section does not adequately cite its references or sources. ... Alternative meaning: Warring States Period (Japan) The Warring States Period (Traditional Chinese: 戰國時代; Simplified Chinese: 战国时代; Pinyin: Zhànguó Shídài) covers the period from sometime in the 5th century BC to the unification of China by the Qin in 221 BC. It is nominally considered to be the second part...


The Greco-Bactrian kings Agathocles and Pantaleon were the first in the world to issue copper-nickel (75/25 ratio) coins 2 around 170 BC, suggesting that exchanges of the metallic alloy, or possibly exchanges of technicians, were happening at the time between China and the region of Bactria. The practice of exporting Chinese metals, in particular iron, for trade is attested around that period. Approximate extent of the Greco-Bactrian kingdom circa 220 BCE. The Greco-Bactrians were a dynasty of Greek kings who controlled Bactria and Sogdiana, an area comprising todays northern Afghanistan and parts of Central Asia, the easternmost area of the Hellenistic world, from 250 to 125 BCE. Their expansion... Silver coin of king Agathocles r. ... Pantaleon (reigned c. ... Centuries: 3rd century BC - 2nd century BC - 1st century BC Decades: 220s BC 210s BC 200s BC 190s BC 180s BC - 170s BC - 160s BC 150s BC140s BC 130s BC 120s BC Years: 175 BC 174 BC 173 BC 172 BC 171 BC - 170 BC - 169 BC 168 BC 167...


Cupro-nickel was not used again in coinage until the 19th century. Cupro-nickel is the cladding on either side of United States Half Dollars (50¢) since 1971, and all Quarters (25¢) and Dimes (10¢) made after 1965. The United States Jefferson Nickel (5¢) coin is solid Cupro-nickel (75/25 ratio).[1] Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ... The term cladding can have a number of meanings: Regarding optical fiber in telecommunication, cladding is one or more layers of material of lower refractive index, in intimate contact with a core material of higher refractive index. ... Obverse Reverse Evolving from the Franklin half dollar, the Kennedy half dollar is a coin of the United States first minted in 1964. ... The quarter is 1/4th of a United States dollar or 25 cents. ... The dime is a coin with a face value of ten cents, or one-tenth of a United States dollar. ... The United States five-cent coin, commonly called a nickel, is a unit of currency equaling one-twentieth, or five hundredths, of a United States dollar. ...


Beginning around the turn of the 20th century, bullet jackets were commonly made from this material. It was soon replaced with gilding metal to reduce metal fouling in the bore. .357 Magnum cartridges, containing bullets A bullet is a solid projectile propelled by a firearm and is normally made from metal (usually lead). ... Gilding metal is a copper alloy, with the composition of 95% copper and 5% zinc. ...


External links

References

1 Ancient Chinese weapons & A halberd of copper-nickel alloy, from the Warring States Period.
2 Copper-Nickel coinage in Greco-Bactria.


  Results from FactBites:
 
Whipple Industries (199 words)
Whipple’s cupronickel, pronounced koo•pro•nik•el, is a space age technology that utilizes a unique blend of pure copper alloy air fins for increased thermal efficiency over aluminum and cupronickel water passages for maximum corrosion resistance.
Some utilize “chromacoat” or anodized cores, which will still corrode over time, only cupronickel will last in the brackish lake waters and ocean salt water because of it’s electronegativity is adjusted to neutral with regard to seawater.
Whipple cupronickel intercoolers can not only withstand salt water, but it has a melting point of over 2000deg F, has large water passages to allow less chances of clogging, comes with billet tanks and tig welded construction.
American Tubing, Inc. - Air Conditioning - Refrigeration Industries - Springdale, Arkansas - Copper - Straight Length - ... (171 words)
Our manufacturing flexibility allows us to serve a diverse customer base, as our components are also used in the defense and automation industries.
In addition to copper components, American Tubing has fabricating capabilities in other metals such as brass, cupronickel and aluminum.
They are joined by our experienced representatives in the field to form a customer driven, responsive team who is ready to meet your needs.
  More results at FactBites »

 
 

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