LED sapphire ingot growing furnace hot zone tungsten crucible

Tungsten crucible Materials: pure tungsten 99.95%Min Size: OD350 X H400mm Density: 18.0g/cc Min Surface: grind Ra3.2

Tungsten has the highest melting point of all metals as well as a remarkably high modulus of elasticity. Molybdenum also belongs to the refractory metals group with excellent thermal properties and is still easy to machine. So , tungsten, molybdenum and their alloy is the best choice for the all kinds of high temperature furnace. They can easily withstand even the most intense heat.

Tungsten and molybdenum furnace components

Chemical composition: tungsten >99.95% ( percentage by weight)

molybdenum >99.95% , molybdenum lanthanum alloy , TZM alloy

Specification: round, square , special design according to drawing

Surface finish : < Ra3.2 shining furnace

Working temperature: 1500 ~ 2600 In Vacuum or deoxidize atmosphere

Produce Method: Powder Metallurgy

Main applications

sapphire single crystal growth furnace, metallurgical industry furnace, vacuum furnace, high temperature furnace, silicon industry furnace, quartz glass, metal extracting, , machinery processing, glass and ceramic industries, etc.

SMT’s advantage in furnace components

1)Large size, high purity, high density, Smooth furnace , difficulty structure

2)Long history and rich experience of of supplying kinds of furnace components

3)Competitive price & professional service.

Tungsten Property
Melting point:	3420  oC±20  oC
Boiling point:	5550 oC
Coefficient of linear thermal expansion at 20 °C	4.2 · 10-6 [m/(m·K)]
Thermal conductivity at 20 °C	164 [W/(m·K)]
Specific heat at 20 °C	0.13 [J/(g·K)]
Electrical conductivity at 20 °C	18 · 106 [1/Ω·m)]
Specific electrical resistance at 20 °C	: 0.050 [(Ω·mm2)/m]

Molybdenum Property
Melting point:	2620  oC±20  oC
Boiling point:	4679 oC
Coefficient of linear thermal expansion at 20 °C	5.2 · 10-6 [m/(m·K)]
Thermal conductivity at 20 °C	142 [W/(m·K)]
Specific heat at 20 °C	0.254 [J/(g·K)]
Electrical conductivity at 20 °C	17.9 · 106 [1/Ω·m)]
Specific electrical resistance at 20 °C	: 0.056 [(Ω·mm2)/m]

LED sapphire ingot growing furnace hot zone tungsten crucible