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ESPI Metals1050 Benson Way Ashland, Oregon 97520 541.488.8311 telephone 800.638.2581 toll-free 541.488.8313 fax 800.488.0060 toll-free fax sales@espimetals.com |
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Tungsten is a refractory metal, a group that includes niobium, tantalum, molybdenum and rhenium, so-called because of their high melting temperatures and low vapor pressures. It is produced exclusively as a metal powder which is then solidified by sintering and/or melting. Tungsten is used, in wire form, extensively for lighting, electronic devices, and thermocouples. It’s high melting point makes it especially well-suited for structural applications exposed to very high temperatures.
TYPICAL PROPERTIES:
Physical Properties: Crystal Structure: Body-centered cubic (α phase) Atomic Weight: 183.85 Density: 19.254 g/cm3
Thermal Properties: Boiling Point: 5900 oC (range of 5700 oC + 200 oC) Melting Point: 3410 oC (+ 20 oC) Thermal Conductivity (20 oC): 129 W/m ⋅K Evaporation Heat: 444 J/g Heat of Fusion: 209 J/g Specific Heat: 0.14 J/g ⋅K
Electrical Properties: Electrical Resistivity (20 oC): 5.5 µΩ/cm Temperature Coefficient of the Electrical Resistivity: 482 ⋅10-5 Ω/ΩK Temperature of Superconductivity: 0.016 K
Mechanical Properties: Tensile Strength (20 oC): Sheet Thickness psi 0.5 - 1.0 mm >188,500 1.0 - 5.0 mm >116,000 Compressive Strength (20 oC): 166,753 psi Modulus of Elasticity (20 oC): 59,450 ⋅103 psi Transition Temperature (Brittle/Ductile): 100 oC - 400 oC |