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tungsten
[ tuhng-stuhn ]
noun
- a rare, metallic element having a bright-gray color, a metallic luster, and a high melting point, 3410° C, and found in wolframite, tungstite, and other minerals: used in alloys of high-speed cutting tools, electric-lamp filaments, etc. : W; : 183.85; : 74; : 19.3.
tungsten
/ ˈtʌŋstən /
noun
- a hard malleable ductile greyish-white element. It occurs principally in wolframite and scheelite and is used in lamp filaments, electrical contact points, X-ray targets, and, alloyed with steel, in high-speed cutting tools. Symbol: W; atomic no: 74; atomic wt: 183.85; valency: 2–6; relative density: 19.3; melting pt: 3422±20°C; boiling pt: 5555°C Also calledwolfram
tungsten
/ tŭng′stən /
- A hard, gray to white metallic element that is very resistant to corrosion. It has the highest melting point of all elements, and it retains its strength at high temperatures. It is used to make light-bulb filaments and to increase the hardness and strength of steel. Atomic number 74; atomic weight 183.84; melting point 3,410°C; boiling point 5,900°C; specific gravity 19.3 (20°C); valence 2, 3, 4, 5, 6.
- Also called wolfram
- See Periodic Table
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Other Words From
- tung·sten·ic [tuhng-, sten, -ik], adjective
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Word History and Origins
Origin of tungsten1
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Word History and Origins
Origin of tungsten1
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Example Sentences
The raw materials— tin, tantalum, tungsten and gold—were dubbed “conflict minerals.”
The Mojave is rich with silver, tungsten, gold, and iron deposits.
In China, for example, tungsten, tantalum, tin and gold are mined and ore is imported from other countries.
Tungsten, tantalum, tin and gold are used to produce many common consumer electronics devices.
And when you review the periodic table, take special note of Tungsten, or Wolfram.
This property may be increased by alloying the steel with tungsten and hardening it before it is magnetized.
Magneto field magnets are always made of tungsten steel alloy, so treated that it will retain its magnetism for lengthy periods.
The operation of mounting Tungsten filaments in small copper wire is very much like threading an exceedingly small needle.
More efficient lamps have been devised with filaments of the metals tantalum and tungsten (Fig. 274).
How many candle power should a 20-watt tungsten lamp give if its efficiency is one watt per candle power?
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