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Tombac is an alloy
Alloy

An alloy is a partial or complete solid solution of one or more chemical element in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal history....
 of copper
Copper

Copper is a chemical element with the symbol Cu and atomic number 29.It is a ductile metal with very high thermal and electrical conductivity....
 and zinc
Zinc

Zinc is a metallic chemical element with the symbol Zn and atomic number 30. It is a first-row transition metal of the group 12 element of the periodic table....
. This alloy is used by Russia
Russia

Russia , or the Russian Federation , is a list of countries spanning more than one continent country extending over much of northern Eurasia....
 in making medal
Medal

A medal is usually a coin-like sculpted object of metal or other material that has been engraved with an insignia, portrait or other artistic rendering....
s (The 1980 Olympic
1980 Winter Olympics

The 1980 Winter Olympics, officially known as the XIII Olympic Winter Games, were a winter multi-sport event which was celebrated in February 13 through February 24, 1980 in Lake Placid, New York, New York, United States....
 'Bronze' Medals were actually Tombac medals). During World War II
World War II

World War II, or the Second World War , was a global military conflict which involved a Participants in World War II, including all of the great powers, organised into two opposing military alliances: the Allies of World War II and the Axis powers....
, the same alloy was used to mint Canadian
Canada

Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean....
 nickels
Nickel (Canadian coin)

The Canadian five-cent coin, commonly called a nickel, is a coin worth five cent or one-twentieth of a Canadian dollar. It was patterned on the nickel in the neighbouring United States....
.

Tombac is an alloy formed from copper (84 - 90%) and zinc (10 - 16%) - The addition of arsenic produces White Tombac. It is also used in the manufacture of projectile
Projectile

A projectile is any object propelled through space by the exertion of a force, which ceases after launch. In a general sense, even a Football or baseball may be considered a projectile....
s at Barnaul Machine Tool-Plant Zavod, in Russia.






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Tombac is an alloy
Alloy

An alloy is a partial or complete solid solution of one or more chemical element in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal history....
 of copper
Copper

Copper is a chemical element with the symbol Cu and atomic number 29.It is a ductile metal with very high thermal and electrical conductivity....
 and zinc
Zinc

Zinc is a metallic chemical element with the symbol Zn and atomic number 30. It is a first-row transition metal of the group 12 element of the periodic table....
. This alloy is used by Russia
Russia

Russia , or the Russian Federation , is a list of countries spanning more than one continent country extending over much of northern Eurasia....
 in making medal
Medal

A medal is usually a coin-like sculpted object of metal or other material that has been engraved with an insignia, portrait or other artistic rendering....
s (The 1980 Olympic
1980 Winter Olympics

The 1980 Winter Olympics, officially known as the XIII Olympic Winter Games, were a winter multi-sport event which was celebrated in February 13 through February 24, 1980 in Lake Placid, New York, New York, United States....
 'Bronze' Medals were actually Tombac medals). During World War II
World War II

World War II, or the Second World War , was a global military conflict which involved a Participants in World War II, including all of the great powers, organised into two opposing military alliances: the Allies of World War II and the Axis powers....
, the same alloy was used to mint Canadian
Canada

Canada is a country occupying most of northern North America, extending from the Atlantic Ocean in the east to the Pacific Ocean in the west and northward into the Arctic Ocean....
 nickels
Nickel (Canadian coin)

The Canadian five-cent coin, commonly called a nickel, is a coin worth five cent or one-twentieth of a Canadian dollar. It was patterned on the nickel in the neighbouring United States....
.

Tombac is an alloy formed from copper (84 - 90%) and zinc (10 - 16%) - The addition of arsenic produces White Tombac. It is also used in the manufacture of projectile
Projectile

A projectile is any object propelled through space by the exertion of a force, which ceases after launch. In a general sense, even a Football or baseball may be considered a projectile....
s at Barnaul Machine Tool-Plant Zavod, in Russia. Tombac is bonded in a heat process with steel
Steel

Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.14% by weight , depending on grade. Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese, chromium, vanadium, and tungsten....
 to produce a bi-metallic projectile, giving the appearance of a copper jacket but having the added strength of steel.

The term tombac is derived from Malay word tembaga, which means copper.

See also

  • Brass
    Brass

    Brass is any alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. In comparison, bronze is principally an alloy of copper and tin....


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