Two main parts of the intervertebral discs are the outer ring (annulus fibrosus) and the inner gelatinous material. (nucleus pulposus). The outer ring consists of fibrocartilage, while the inner material shows many similarities to the articular hyaline cartilage both in its biochemical and histological appearance.
For this reason, Everything Wedding Rings recommends avoiding black tungsten wedding bands-with one exception. Titanium Kay has recently launched a new tungsten carbide wedding ring design with solid black inlay that is 100% scratch proof. So, if you are looking for a tungsten ring with black inlay features I highly recommend one of the Titanium Kay 2nd Generation rings.
Tungsten has the highest melting point of all metals and is alloyed with other metals to strengthen them. Tungsten and its alloys are used in many high-temperature applications, such as arc-welding electrodes and heating elements in high-temperature furnaces.Tungsten carbide is immensely hard and is very important to the metal-working, mining and petroleum industries.It is made by mixing tungsten powder and carbon powder and heating to 2200Â°C. It makes excellent cutting and drilling tools, including a new âpainlessâ dental drill which spins at ultra-high speeds.ungsten is the heaviest metal to have a known biological role. Some bacteria use tungsten in an enzyme to reduce carboxylic acids to aldehydes. Natural abundance. The principal tungsten-containing ores are scheelite and wolframite. The metal is obtained commercially by reducing tungsten oxide with hydrogen or carbon.