Tungsten Chemical Facts

Tungsten Chemical Facts Sheet

Tungsten, also known as wolfram, is a chemical element with the chemical symbol W and atomic number 74.
 tungsten chemical propertiesAtomic number: 74
 Atomic mass: 183.85 atomic mass units
 Common isotopes: 180, 182, 183, 184, 186
 Ground state electronic configuration: 1s22s22p63s23p63d104f145s25p65d46s2
 Common oxidation states: 2+, 3+, 4+, 5+, 6+
 Physical appearance: Silver lustrous metal, solid
 Physical properties:
 Melting point: 3,140 degrees C (highest of all metals)
 Boiling point: 5,530 degrees C
 Crystal structure: body centered cubic
 Density: (at 293 K) 19.3 g/cm3
 Electro negativity: 1.7 (Pauling)
 Source: in the earth. China produces 75% of the world's tungsten
 Price per gram: .006174 US dollars
 Uses: Used as light bulb filaments because of their high heat capacity. Tungsten will burn bright without corroding for a long time.

Tungsten Chemical Facts Properties

Tungsten has the highest melting point of all metals, and at temperatures over 1650 deg C has the highest tensile strength. The metal oxidizes in air and must be protected at elevated temperatures. Tungsten facts have excellent corrosion resistance and are attacked only slightly by most mineral acids. The thermal expansion is about the same as borosilicate glass, which makes the metal useful for glass-to-metal seals. Tungsten facts and its alloys are used extensively for filaments for electric lamps, electron and television tubes, and for metal evaporation work; for electrical contact points for automobile distributors; X-ray targets; windings and heating elements for electrical fumiest; and for numerous spacecraft and high-temperature applications. High-speed tool steels, Hostelry(R), Satellite(R), and many other alloys contain tungsten. Tungsten carbide is of great importance to the metal-working, mining, and petroleum industries. Calcium and magnesium tungsten are widely used in fluorescent lighting; other salts of tungsten are used in the chemical and tanning industries. Tungsten disulfide is a dry, high-temperature lubricant, stable to 500 deg C. Tungsten bronzes and other tungsten compounds are used in paints. Tungsten powder (99.95%) costs about $325/kg.

tungsten oretungsten ore

If you have any interest in tungsten chemical facts, please feel free to contact us by email: sales@chinatungsten.com, sales@xiamentungsten.com or by telephone: +86 592 5129696.

主站蜘蛛池模板: 福利一区在线观看| 亚洲免费小视频| 一区二区三区四区在线视频| 色老成人精品视频在线观看| 欲惑美妇老师泛滥春情在线播放| 无上神帝天天影院| 国产午夜电影在线观看| 亚洲av无码电影网| 日本另类z0zx| 男人的j进入女人的p的动态图| 日本二本三本二区| 国产乱人伦无无码视频试看| 亚洲国产精品视频| eeuss影院在线奇兵区1页| 5g影院天天爽天天| 精品一区二区三区3d动漫| 惩罚憋尿花蒂揉搓震动| 国产成人综合野草| 久久精品无码一区二区日韩av| 91视频免费网址| 玩弄放荡人妻少妇系列视频| 无码aⅴ精品一区二区三区| 国产xvideos在线观看| 久久狠狠高潮亚洲精品| 网站在线观看你懂的| 欧美精品在线一区二区三区| 奇米777视频国产| 午夜视频在线观看区二区| 久久久久久久久久久久久久久 | 亚洲sss综合天堂久久久| 欧洲美熟女乱又伦av影片| 国产成人麻豆精品午夜福利在线| 久久精品国产99久久99久久久| 野战爱爱全过程口述| 日韩精品一区在线| 国产一区二区三区手机在线观看| 中文字幕15页| 爱福利极品盛宴| 女神校花乳环调教| 亚洲熟妇AV乱码在线观看| 99精品久久99久久久久久|