Copper density cube ultra precision 10.0x10.0x10.0mm - 99.999% - Made in Austria For Sale

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Copper density cube ultra precision 10.0x10.0x10.0mm - 99.999% - Made in Austria:
$99.00

10.0 x 10.0 x10.0 mm - purity 99.99%

The most accurate density standard cubes available - Made in Austria!

We were one of the first suppliers for element cubes. In the meanwhile you find a lot of sellers everywhere, but if it comes to precision, only the handmade cubes of our series will meet this criteria. Each one diamond ground, calibrated and optionally mirror polished.

Copper Precision density-standard cube 1cm3 NEW! Laser engraved. Using finest materials, each density cube was lapped to 10x10x10mmby a mechanical engineering company with an accuracy of0.01 millimeter.Eachoneseparately ground and polished it represents the theoretical density of the respective element by its weight. The weight is not affected by the laser inscription. Information such as element symbol, name and density is durable burned at the surface.

Altogether 36 elements are available in a complete set in a wooden case (available separately).

Copper is a reddish colored metal which is malleable and ductile. It has excellent thermal and electrical conductivities and good corrosion resistance. It is found in sulfide ores and as carbonate, arsenide and chloride (abundance in the Earth's crust is 50 ppm). Extraction of the metal involves roasting the ore to produce the oxide, followed by reduction and purification by electrolysis. The element is inert to non-oxidising acids but reacts with oxidising agents. In air, it will weather to produce the characteristic green patina of the carbonate. Copper will combine with oxygen on heating to produce CuO at red heat, and Cu2O at elevated temperatures.Pure copper has an electrical conductivity second only to that of silver and hence its main application is in the electrical industry. Copper is also the basis of many important alloys (e.g. brass, bronze and aluminum bronze) and has been traditionally considered to be one of the coinage metals, along with silver and gold, but being more common, is the least valued. It is one of the first metals ever to have been worked by man and is thought to have been mined for more than 5000 years.

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Copper density cube ultra precision 10.0x10.0x10.0mm - 99.999% - Made in Austria

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