Both titanium and tungsten are considered model metals in the jewelry industry because they were not available to the consumer market as commodities until ten years ago. They have gained tremendous popularity since the introduction and become an integral part of the jewelry material spectrum.
What is Tungsten Carbide?
On its own, tungsten is a very hard and dense metal, with the highest melting point of all metals – 6,100 degrees Fahrenheit. Alone, tungsten is vulnerable to scratches and damage just like any other metal; it gains its extreme hardness by being combined with a carbon alloy, transforming it into tungsten carbide, with a hardness between 8.5 and 9.5 on the Mohs hardness scale. The strength of tungsten carbide has made it widely used for decades in industrial applications – it is four times harder than titanium, twice as hard as steel and almost impossible to scratch. The resulting metal can be designed into wedding band rings that are both visually stunning to please the eye and durable enough to withstand everyday use. These rings can only be damaged through extreme measures, such as abrasion from diamonds or being struck with a hammer.
What is titanium?
While titanium has been known to us for many years, it was originally used in aerospace and salt water projects, becoming widely used in commercial applications and now in jewelry designs during the last two decades. One reason why titanium rings are gaining in popularity, especially with men, is because of its strength that belies its light weight feel.
The style and design of your ring aside, there are some practical reasons why choosing titanium makes sense. Because it is an inert metal, it is ideal for people with sensitive skin. This fact accounts for its use in the production of equipment and tools for medical procedures. You will never have to worry about damage from the elements to your titanium wedding ring, unlike silver; it will remain completely tarnish-free.
Due to the rather little exposure, many questions arise concerning titanium and tungsten when it comes to choosing jewelry. The followings are some points of consideration if you are seriously thinking about buying a titanium or tungsten ring.
1. Hardness
Titanium and tungsten are both known for the superior hardness over traditional metals such as gold, silver and platinum. One thing worth noting is that it is not the metals themselves in a pure form that possess the hardness, it is their alloys that do. Roughly speaking, the hardest form of tungsten carbide is harder than titanium alloys, and only under extreme circumstances, such as abrasion from diamonds, can it be damaged.
2. Ductility
Titanium is more ductile than tungsten in the common alloys used in jewelry. In other words, when a ring is under high pressure, such as hit by a car door, a titanium ring would be bend out-of-round whereas a tungsten carbide ring would fracture into several pieces. Hence, in terms of safety, a tungsten carbide ring is safer to wear.
3. Hypoallergenic
This is the very same concern as buying silver jewelry to some people: Will I be allergic to the jewelry? In general, titanium jewelry is virtually safe to wear for everybody. Yet, some tungsten carbide jewelry contains the element cobalt that some people are allergic to. Interesting, another form of tungsten alloy using nickel as a binder metal is hypoallergenic, even to people who are allergic to nickel. Go figure, eh!
4. Weight
Titanium is lighter than tungsten, or more precisely, has a lower density. Titanium alloys are about 43% lighter than stainless steel and tungsten carbide is about 90% heavier than stainless steel.
5. Coloring
Titanium reacts with different chemicals and produces alloys of different colors. jewelry makers use anodization to coat colored patterns on titanium rings. Black titanium is another form of titanium alloy that has a different color than the commonly used grey color. On the other hand, tungsten carbide is usually offered on in black color only.
6. Pricing
Titanium jewelry is in general cheaper than tungsten jewelry primarily due to the difference in equipment and environment control need to produce them. The temperature for forming a tungsten carbide is about 6000 Fahrenheit, which has to be in either a vacuum or hydrogen environment.
7. Engraving and resizing
Titanium rings can be engraved and resized. However, a tungsten carbide ring is too hard to be engraved or resized. Although engraving can be done, the letters will be very faint and difficult to read. So if you are buying a ring to engrave, get titanium rings.
