Negara

W (Tungsten)

Konten Dimensi Produk belum tersedia

Keterangan

     Some sources give the German chemist Karl Wilhelm Scheele as the first to isolate the metal in 1880, but most sources credit the Elhuijar brothers.

Nama lain (trademark, branding etc.)

Wolframium, Wolfram, Tungsténe, Wolfram - r, Wolframio, Tungstênio, Вольфрам, Volfram

 

Spesifikasi Produk

Overview of Tungsten
Atomic Number 74
Group 6
Period 6
Series Transition Metals
Relative Atomic Mass (12C=12.000)  183.85
Boiling Point 5928K 5655°C 10211°F
Melting Point  3680K 3407°C 6165°F
Density/kg m-3  19300 (293K)
Ground State Electron Configuration  [Xe]4f145d46s2
Electron Affinity(M-M-)/kJ mol-1  -119
Discoverer Fausto and Juan José de Elhuijar
Discovery Location Vergara Spain
Discovery Year 1783
Name Origin Swedish: tung sten (heavy stone): W symbol from its German name wolfram which is named after wolframite.

Aplikasi

     Tungsten and its alloys are used extensively for filaments for electric lamps, electron tubes and television tubes. As it has the highest melting point of all metals it is used in numerous high-temperature applications. High-speed tool steels contain tungsten, as does a new "painless" dental drill which spins at ultra-high speeds.
     Tungsten carbide is immensely hard and so is of great importance to the metal-working, mining and petroleum industries.
     Calcium and magnesium tungstates are widely used in fluorescent lighting.

Bahan Baku

Tungsten, also known as wolfram, is a chemical element with the chemical symbol W and atomic number 74.

Konten Indikasi Harga belum tersedia

Data tidak tersedia

steelindonesia ads

Member Name : JOTUN INDONESIA
Address : Kawasan Industri MM2100, Jalan Irian III Blok KK1
Phone : +62 21 89982657



Member Name : PRIMANUSA SEJATI
Address : Jl. Raya Kelapa Gading Selatan, Ruko Beryl 3 No. 39, Gading Serpong
Phone : +62 21 54217435



Member Name : DUTA CIPTA PAKARPERKASA
Address : Jl. Mastrip IX / 7
Phone : +62 31 8433880



Member Name : TURKINDO JAYA
Address : Jl. Margonda Raya Perkantoran ITC Depok Ruko No 35
Phone : 02185547845



Member Name : Oxford Instruments Pte Ltd
Address : 10 Ubi Crescent #04-81, Ubi TechPark Lobby E
Phone : +65 63376848