WHAT IS TUNGSTEN?
Tungsten , or wolfram, is a chemical element with the symbol W and atomic number 74. The name tungsten comes from the former Swedish name for the tungstate mineral scheelite , tungsten which means "heavy stone". Tungsten is a rare metal found naturally on Earth almost exclusively combined with other elements in chemical compounds rather than alone. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include wolframite and scheelite .
The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all the elements discovered, melting at 3,422 °C (6,192 °F; 3,695 K). It also has the highest boiling point , at 5,930 °C (10,710 °F; 6,200 K). Its density is 19.25 times that of water, comparable with that of uranium and gold , and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work . However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw.
Tungsten's many alloys have numerous applications, including incandescent light bulb filaments, X-ray tubes (as both the filament and target), electrodes in gas tungsten arc welding , superalloys , and radiation shielding . Tungsten's hardness and high density give it military applications in penetrating projectiles . Tungsten compounds are also often used as industrial catalysts.
Really cool item to own
Wes rated this 5 stars on Etsy
Fascinating item. I look forward to impressing people with what this little ball represents.
Dan rated this 5 stars on Etsy
My son has been learning about black holes and I was so happy to find this representation. Packaged well and came with an informative booklet.
This is a gift for my husband. I felt like the store offerings were very unique and special. Everything arrived quickly.
Gleena1613 rated this 5 stars on Etsy
Got this for a stocking stuffer for my grandson and he liked it better than some of his larger gifts. Thank you, have added your store to my favorites.
The model was a gift for my son who is interested in both the density and weight of tungsten as well as black holes. It was an instant hit!
love this model! The tungsten has a real heft to it, which drives home the point.