Tungsten

Properties
Atomic symbol |  W
Atomic number |  74
Classification |  Transition Metal
Atomic mass |  183.84 amu
Other Information
Date of discovery |  1783
Name of discoverer |  José and Fausto Elhuyar
Name origin |  From the Swedish tung sten meaning heavy stone.
Uses |  Due to its high melting point, tungsten is suitable for aerospace and high temperature uses which include drilling, electrical, heating, and welding applications.
Obtained from |  Tungsten is found in the minerals wolframite , scheelite, ferberite and hübnerite. The metal is commercially produced by reducing tungsten oxide with hydrogen or carbon..

Tungsten is a very dense, grayish-silver metal. Its density is virtually the same (to three decimal places) as gold. It also has the highest melting point of all metals, and at temperatures over 1650 °C, the highest tensile strength. The metal oxidizes in air and needs to be protected at higher temperatures. It has very good corrosion resistance and is corroded only slightly by most mineral acids. Tungsten is exploited for its high melting point and density, and that is reflected in its uses.

## Uses[edit]

Tungsten has a variety of uses from ballast weights for aircraft control panels, to filaments in light bulbs:

\- Electrodes for welding

\- Wire extrusion dies

\- X-ray tube windows

\- Armor piercing projectiles

\- Shotgun shot

\- Bucking bars

\- Evaporation filaments and boats

Periodic Table of the Elements

1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10  | 11  | 12  | 13  | 14  | 15  | 16  | 17  | 18

1.008

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

4.003

6.939

9.0122

|  |  |  |  |  |  |  |  |  |  |

10.811

12.011

14.007

15.999

18.998

10.183

22.99

24.312

|  |  |  |  |  |  |  |  |  |  |

26.982

28.086

30.974

32.064

35.453

39.948

39.102

40.08

44.956

47.9

50.942

51.996

54.938

55.847

58.933

58.71

63.546

65.37

69.72

72.59

74.922

78.96

79.904

83.8

85.47

87.62

88.905

91.22

92.906

95.94

[97]

101.07

102.91

106.4

107.87

112.4

114.82

118.69

121.75

127.6

126.9

131.3

132.91

137.34

57*

138.91

178.49

180.95

183.85

186.2

190.2

192.2

195.09

196.97

200.59

204.37

207.19

208.98

210

210

222

215

226.03

89**

227.03

104

[261]

105

[262]

106

[266]

107

[264]

108

[265]

109

[268]

110

[271]

111

[272]

112

[277]

113

[284]

114

[289]

115

[288]

116

[292]

117

[293]

118

[294]

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
*Lanthanides  |

140.12

140.91

144.24

145

150.35

151.96

157.25

158.92

162.5

164.93

167.26

168.93

173.04

174.97

|  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
**Actinides  |

232.04

231

238.03

237.05

239.05

241.06

244.06

249.08

252.08

252.08

100

257.1

101

258.1

102

259.1

103

262.11

|  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |