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Tungsten (₇₄W^183.85)
[7440-33-7]

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The metallic element tungsten is not found free in nature, but in several ores. Tungsten is steel-gray to tin-white in color and, when very pure, can be forged, spun, drawn, and extruded. Impure tungsten is very brittle and difficult to work. Tungsten is very resistant to corrosion and stable in dry air at room temperature. Tungsten's melting point exceeds that of all other metals and it has the lowest vapor pressure. At temperatures over 1650°C, tungsten has the highest tensile strength.
Melting Point	3410°C	Boiling Point	5900°C
Density	19.3g/cm³	Themal Conductivity	0.40cal/cm²/cm/s/°C
Specific Heat @ 25°C	0.032cal/g°C	Heat of Fusion	8.05k-cal/g-atom
Heat of Vaporization	197k-cal/g-atom	Atomic Volume	9.53W/D
First Ionization Energy	184K-cal/g-mole	Electronegativity	1.7Pauling's
Covalent Radius	1.30Angstroms	Thermal Expansion	4.6ppm/°C
Electrical Resistivity @ 25°C	5.6µΩ-cm	Crystal Structure	Cubic, body centered
Tensile Strength	500,000psi