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Qualities of tungsten ring

Tungsten carbide is an inorganic chemical compound containing the same number of tungsten and carbon atoms.
Sometimes referred to him familiarly as 'carbide'
In its most basic form, is a fine gray dust, but can be pressed and formed into shapes for use in industrial machinery, tools, abrasives, and jewelry for men and women.

The tungsten carbide rings have the following properties:

- Melting point to the 5,200 degrees Fahrenheit (2.870 degrees Celsius)
- Boiling point: 6000 ° C
- Density: 15.6 g/cm3.
- Very difficult to scratch, only scratch with a diamond, or products that contain mineral corundum (micro crystalline)
- Impossible to double or float.
- 10 times harder than gold, 5 times harder than tool steel, and 4 times harder than titanium.
- Excellent wear resistance. Very long life unalterably.
- Does not interact with common or household chemicals.
- Does not interact with magnetic fields.
- 100% hypoallergenic.

In Wikipedia you can find detailed information on tungsten carbide:
http://es.wikipedia.org/wiki/Carburo _ de_wolframio