A highly attractive investment grade copper bar released in limited numbers in 2010. Each one is individually wrapped in plastic to protect them and have not been removed from the packaging for photographing. A new design incorporating a map of Australia on one side and multiple miniature maps on the other. These bars are similar to the one ounce version offered on this site but are 5 times the weight. Unique in their design and very pleasing to look at. They even look great just propped up on the bookshelf as a curio for display. Worthy of both collection and display it is a beautifully struck bullion bar. The high quality strike is the main thing that appeals about it. The bar is in mint condition. The bars are 5 ounces pure copper bullion running .999 fine.
Stamped text is: AUSTRALIAN COPPER 999 5oz 2010
Bar size: 85 mm x 55 mm
.999 FINE COPPER ONE TROY OUNCE
One troy ounce = 480 grains, or 31.10 grams.
There are also 20 pennyweights to a troy ounce. A troy pound contains 12 troy ounces (over 13 avoirdupois ounces) and is equivalent to 373.24 grams. 32.15 troy ounces = 1 kilogram.
Copper is an essential trace element that is vital to the health of all living things (humans, plants, animals, and microorganisms). The human body normally contains copper at a level of about 1.4 to 2.1 mg for each kg of body mass. Copper is distributed widely in the body and occurs in liver, muscle and bone. Copper is transported in the bloodstream on aplasma protein called ceruloplasmin. When copper is first absorbed in the gut it is transported to the liver bound to albumin. Copper metabolism and excretion is controlled delivery of copper to the liver by ceruloplasmin, where it is excreted in bile. Daily dietary standards for copper have been set by various health agencies around the world. Researchers specializing in the fields of microbiology, toxicology, nutrition, and health risk assessments are working together to define precise copper levels required for essentiality while avoiding deficient or excess copper intakes.
As a component in ceramic glazes, and to color glass.
Musical instruments, especially brass instruments and timpani.
Class D fire extinguisher, used in powder form to extinguish lithium fires by covering the burning metal and acting as a heat sink.
Textile fibers to create antimicrobial protective fabrics.
Small arms ammunition commonly uses copper as a jacketing material around the bullet core.
Copper is also commonly used as a case material, in the form of brass.
Copper is used as a liner in shaped charge armor-piercing warheads and demolition explosives (blade).
Copper is frequently used in electroplating, usually as a base for other metals such as nickel.
Copper can also be used for jewelry, most frequently in bracelets. Folklore states that copper bracelets relieve arthritis symptoms, though this is not proven.