Molybdenum Heater

 

The Molybdenum Heater is a high-performance resistance heating element, specially designed for extreme high-temperature processes in vacuum or protective atmospheres (such as hydrogen or argon). Leveraging the physical properties of molybdenum metal, such as its high melting point (approximately 2610°C), high temperature strength, low vapor pressure, excellent thermal conductivity and electrical conductivity, it can achieve stable, pure and efficient heating beyond the limits of ordinary alloy heating elements. It is an indispensable core equipment in cutting-edge industrial and scientific research production.

 

 

 

1.Outstanding temperature resistance performance

The operating temperature of this heater can typically reach 1600°C. The optimally designed molybdenum heating chamber can withstand temperatures above 2000°C, meeting the requirements of extreme processes.

 

2. Precise Temperature Control

Thanks to the high thermal conductivity of about 142 W/(m·K) of molybdenum metal, this heating element can be designed in complex shapes such as spirals, effectively controlling the temperature difference within the furnace. For instance, in a single-crystal silicon furnace with an 800mm diameter furnace chamber, the temperature difference can be reduced to within 8°C, significantly improving product yield and performance.

 

3. Carbon-free high-purity environment

Unlike graphite heaters, this molybdenum heating element does not produce hydrocarbons in hydrogen or other atmospheres, thus avoiding contamination of the workpiece. It is particularly suitable for the processing of carbon-sensitive materials such as stainless steel and titanium, ensuring the high purity of both the vacuum and the process atmosphere.

 

4. Stable Output and Long Lifespan

The resistance temperature coefficient of molybdenum is low (approximately 0.0043/°C), resulting in small changes in resistance value with temperature. The output power is stable, and the temperature control accuracy can reach ±4°C (traditional equipment ±15°C). It has strong resistance to creep at high temperatures and a low evaporation rate (approximately 0.015g/h·m²). After continuous operation for 5000 hours, this heating system still maintains 92% of the initial performance, significantly reducing maintenance costs.

 

5. Energy-saving and consumption-reducing design

This heating system optimizes the radiation shielding structure to reduce heat loss. The example shows that after adopting the molybdenum heating system, the electricity consumption per furnace operation can be reduced by 18%, helping enterprises achieve green production and cost optimization.

 

 

 

1.Vacuum heat treatment furnace

The heating element is used for solid solution treatment and annealing of key components in aerospace and nuclear energy fields (such as titanium alloys, beryllium bronze), with the maximum heating temperature reaching 1500°C, ensuring a bright surface and no oxidation of the workpiece.

 

2. Material Sintering and Crystal Growth

In the manufacturing of high-performance materials such as silicon carbide ceramics and aluminum nitride substrates, The heating element provides a stable thermal field of up to 2050°C; it is also applied in sapphire and single-crystal silicon growth furnaces to ensure crystal quality and production efficiency.

 

3. Glass Melting and Processing

As the electrode for the glass electric melting furnace, this heating element is directly immersed in the glass liquid for heating. Its energy efficiency is higher than that of traditional flame heating, and the uniformity of the material temperature is better. At the same time, it improves the safety of the working environment.

 

4. High Purity and Special Processes

In processes such as metal injection molding (MIM), thermal degreasing, and high-temperature pyrolysis that require a carbon-free environment, the heating element prevents reactions with graphite, ensuring process purity. It is the preferred choice for handling high-precision materials.

 

 

 

Item	Specification
Product Name	Molybdenum Heater
Material	High-purity Molybdenum (Mo ≥ 99.95%)
Material Grade	Mo1 / TZM (optional, based on application)
Form Types	Wire, rod, strip, plate, spiral coil, custom-shaped heating elements
Operating Temperature	1200°C – 1900°C (vacuum or inert atmosphere)
Melting Point	2620°C
Density	10.2 g/cm³
Electrical Resistivity	~5.2 μΩ·cm (20°C)
Thermal Conductivity	~138 W/m·K
Thermal Expansion Coefficient	~4.8 × 10⁻⁶ /K
Working Atmosphere	Vacuum, Argon, Hydrogen (non-oxidizing environment required)
Surface Finish	Bright / Polished / Chemically cleaned
Manufacturing Standard	ASTM B386 / ASTM B387 or equivalent
Design Type	Resistance heating element, custom furnace heater
Service Life	Long service life under controlled atmosphere conditions
Customization	Available (geometry, resistance, power rating, dimensions)
Applications	Vacuum furnace, semiconductor processing, crystal growth, HIP, sintering, high-temperature research equipment

 

 

 

 

 

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