Titanium Ring

Engineer's Ring

Titanium rings are jewelry rings or bands which have been primarily constructed from titanium. The actual compositions of titanium can vary, such as ‘commercial pure’ (99.2% titanium) or ‘aircraft grade’ (90% titanium). Rings crafted from titanium are a modern phenomenon, becoming widely available on the market around the 1990s.

They offer several unique properties: they are biocompatible (hypoallergenic), lightweight, corrosion-resistant, and have the highest strength-to-weight ratio of any metal. Titanium was discovered in England in 1791 by William Gregor.

It was also discovered around the same time by Hungarian mineralogist Franz-Joseph Müller von Reichenstein, and later in 1795 by German chemist Martin Heinrich Klaproth – the latter of which gave titanium its name, after the Titans of Greek mythology. However, it was not until after 1932 that commercial use for titanium became possible, due to methods established by William Justin Kroll, who devised ways of reducing titanium tetrachloride into its metal form. His process is still used today for commercially-produced titanium.

The value of titanium rings can be very high. This is ostensibly because the process of extracting titanium from its various ores is laborious and costly. Although it is indeed expensive as an engineering material, it is still cheaper than the jeweller’s usual precious metals, even silver. Titanium rings are constructed using solid bars, tubes or sheets of titanium, which are cut into the desired shape and size of a ring. The metal can be machined using the same equipment and via the same engineering processes as stainless steel, but the usual jewelry-making techniques of rolling and soldering are not practical for titanium.

It is highly resistant to most causes of corrosion, including sea water, aqua regia, chlorine (in water), and some acids. It is soluble in concentrated acids, however. Titanium rings are therefore practical for those who regularly swim in the ocean or chlorinated pools, for example. This is in contrast to some traditional jewelry materials, such as silver, brass and bronze, which are prone to tarnishing and other manifestations of deterioration.

Titanium rings, depending on composition, have varying degrees of fatigue resistance and tensile strength. However, almost all well-known compositions feature higher fatigue resistance, as well as strength-to-weight ratios, than most – if not all – known metals. Consequently, titanium rings are almost impossible to resize. They are only slightly more difficult to cut off in case of emergency than gold rings; titanium is comparable to steel in its resistance to sawing.

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