Which metallic binder is used can have an effect on the final product. For instance, if a tungsten carbide ring is made with cobalt, then it may cause a rash on the finger of the person wearing it, or it may tarnish by coming into contact with the oils produced by a person's skin. Nickel on the other hand does neither of these things, and it creates a safer, more durable product. Unfortunately though, nickel is much more expensive. So like any product, the particular components required should be taken into account before manufacturing to be sure that the final result has all the necessary attributes.

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The process for making tungsten carbide is simple. Equal parts powdered tungsten and carbon are mixed together along with a metallic binder. The most common binders currently in use are cobalt and nickel. The mixture is compacted into a shape, and it's then heated to above the melting point of the binder. The tungsten carbide, which is powdered, is then surrounded by the molten binder. As the slurry dries, the binder holds the tungsten carbide in a matrix that's extremely hard and durable. Technically tungsten carbide that uses a bonding agent is a composite metal, but it's rarely an issue.

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Tungsten carbide is an extremely hard and durable metal that's used for everything from industrial applications to men's jewelry. A combination of the extremely hard metal tungsten and carbide mixed together with another metal binding agent, tungsten carbide can a hardness of up to 9.5 on the Moh's scale (not very far below diamond, which is the hardest on the scale). Tungsten carbide is also chemically inert, and will not rust or react with other chemicals. Naturally a steel gray color and coming in a powdered form, tungsten carbide can be molded and shaped through extreme heat and pressure into a variety of shapes and forms.

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There aren't many ways to tell just by looking at a ring whether or not it's pure tungsten carbide or a tungsten carbide and cobalt combination. The price is one of the most telling features, because rings made with cobalt are usually cheaper in price. The best way to make sure that you have a genuine tungsten carbide ring is to get a guarantee from the manufacturer, so that if your ring does have cobalt in it you can get a replacement at little or no charge.

Tungsten carbide rings are extremely strong and durable, and the same goes fortheir "permanent" finish. Pure tungsten carbide rings don't dent, scratch or loset heir shine very easily. A tungsten carbide ring with cobalt in it will, however, so if you've bought a tungsten carbide ring that's lost its shine, even after a thorough cleaning, chances are there's cobalt in it.

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There are a lot of downsides that come along with a tungsten carbide ring that has cobalt in it. For one thing, while you wear it, the cobalt in the ring will react with the natural oils produced by your skin. Cobalt rings will change your skin color, and over time they'll develop permanent oxidation spots that you'll never be able to scrub away. The rings might look nice at first, but within a week to a month depending on how much you wear it, the chemical reactions will occur and ruin its look.

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Many rings that claim to be tungsten carbide are actually cobalt and carbide, or a mixture of tungsten, cobalt and carbide. Cobalt is much easier to form a bond with, and the forging can be done at a lower temperature for less cost.

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Tungsten carbide in its normal form is nothing more than a powder. Both tungsten powder and carbide powder have to be brought together and forged at very high temperatures to create the necessary bond that will result in a tungsten carbide ring. This process can be difficult and expensive, but it yields a high-quality product that will last for a long time.

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Tungsten carbide in its normal form is nothing more than a powder. Both tungsten powder and carbide powder have to be brought together and forged at very high temperatures to create the necessary bond that will result in a tungsten carbide ring. This process can be difficult and expensive, but it yields a high-quality product that will last for a long time.

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Tungsten carbide has become one of the more popular nontraditional rings. Known for its strength and durability, the symbolism of tungsten carbide in wedding rings is undeniable. However, there are a number of rings on the market that are made using cobalt, rather than tungsten carbide, and that can create an entirely different sort of ring.

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In 2007, the New England area experienced a scare after published reports suggested that tungsten had leached into various waterways. Certain compounds of the tungsten element show signs of toxicity.

Classification
Tungsten falls into the heavy metal category under the VIB group on the periodic table. Tungsten displays an extreme melting point as well as a high density. Tungsten has the ability to form a vast variety of compounds.

Warning
Various compounds of the metal tungsten have been proven to show signs of toxicity. Some of the most common toxic compounds of tungsten include nitrides, silicides, borides and oxides. Elemental tungsten often gets confused with the compounds of tungsten that display toxic characteristics. Finding elemental tungsten in a water system does not warrant an alarm as the toxicity of the elemental form of tungsten remains insignificant.

Leaching
Tungsten in its pure metallic form can not leach into water. Elemental tungsten has an insoluble composition when introduced to water. Tungsten also has a density 19 times greater than the density of water, making the transportation of tungsten by water nearly impossible.

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