99.95% W Tungsten Materials Crucible Heating Elements Of Induction Furnace
A tungsten crucible is made of pure tungsten as raw material and has the same characteristics as pure tungsten. It is an important container for sapphire crystal growth thermal field, rare earth smelting, quartz continuous melting, and high-temperature heat treatment furnaces. It can be used in vacuum or inert gas below 2600°C.
Specification
delivery condition | specification | tolearance | thickness | roughness | ||
diameter | height | diameter | height | |||
sintered | 10-550 | 10-750 | +/-5.0 | +/-5.0 | 8-20 | <3.5 |
sintering finishing | 10-450 | 10-550 | +/-0.5 | +/-1.0 | 7-18 | <2.5 |
Atomic number | 74 |
CAS number | 7440-33-7 |
Atomic mass | 183.84 [g/mol] |
Melting point | 3420 °C |
Boiling point | 5555 °C |
Density at 20 °C | 19.25 [g/cm3] |
Crystal structure | Body-centered cubic |
Coefficient of linear thermal expansion at 20 °C | 4.410-6[m/(mK)] |
Thermal conductivity at 20 °C | 164 [W/(mK)] |
Specific heat at 20 °C | 0.13 [J/(gK)] |
Electrical conductivity at 20 °C | 18.2106[S/m] |
Specific electrical resistance at 20 °C | 0.055 [(mm2)/m] |
Tungsten Materials Crucible Application