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As core components in high-temperature heat treatment equipment, our molybdenum alloy heating elements are manufactured using high-purity molybdenum base materials and special doping processes, designed specifically for extreme high-temperature environments. These elements can be used up to near melting point temperatures in hydrogen or dissociated ammonia atmospheres, and operate stably up to 2000°C in nitrogen environments. Our precision CNC machining technology ensures dimensional accuracy and surface finish of each element, providing excellent creep resistance and dimensional stability at high temperatures.
The core advantage of molybdenum alloy heating elements lies in their high-temperature strength. When operating temperatures exceed 1700°C, we recommend using TZM alloy or molybdenum-lanthanum alloy with higher recrystallization temperatures and better strength. These materials, processed through unique powder metallurgy and doping technologies, significantly increase recrystallization temperature, avoiding premature failure caused by recrystallization embrittlement of conventional molybdenum materials at high temperatures.
Features
Our molybdenum alloy heating elements are optimally designed with the following distinctive features:
Feature Category
Specific Performance
High-Temperature Stability
Continuous operation for 2-3 years in 1700-2000°K range, extremely low vapor pressure in high-temperature vacuum environments
Oxidation Resistance
Dense oxide layer formation on surface, special models with MoSi2 coating for enhanced oxidation resistance
Mechanical Strength
TZM and Mo-La alloys maintain excellent creep resistance at high temperatures, dispersion-strengthened alloys show lower steady-state creep rates at 1800℃
Corrosion Resistance
Resistance to hydrogen and dissociated ammonia corrosion, good ablation resistance in molten quartz environments
Machining Precision
Precision CNC machining ensures dimensional consistency and easy installation
Diversified Design
Available in various forms including wire, rod, strip, and tube, custom geometries supported
Technical Parameters table
The table below lists key technical parameters for our standard series of molybdenum alloy heating elements:
Parameter Category
Specific Indicators
Material Composition
Pure Mo (>99.95%), TZM (Mo-0.5Ti-0.1Zr), Mo-La (Mo-0.5-1.0La)
Density
Pure Mo: 10.2g/cm³, TZM: 10.1-10.3g/cm³, Mo-La: 10.0-10.2g/cm³
Melting Point
Pure Mo: 2620℃, TZM: ~2600℃, Mo-La: ~2610℃
Maximum Service Temperature
H₂/Dissociated NH₃: near melting point, N₂: 2000℃, Oxidizing atmospheres: requires protective coating
Recrystallization Temperature
Pure Mo: 1000-1200℃, Doped Mo wire: >1500℃, TZM/Mo-La: >1500℃
Electrical Resistivity
At 20℃: 0.05-0.06Ω·mm²/m, increases with temperature
Our molybdenum alloy heating elements are widely used in the following fields:
Aerospace Industry - Heating elements and hot zone structures for high-temperature vacuum furnaces, processing high-performance metals such as titanium, niobium, and tantalum. Hot isostatic pressing (HIP) equipment relies on the high-temperature strength and dimensional stability of molybdenum components.
Glass Manufacturing Industry - As electrodes for electric melting, with only 7.8g loss per ton of glass produced, service life can exceed one year. Also used in glass fiber drawing furnaces, replacing platinum components to reduce production costs.
Electronics and Semiconductor Industry - For sintering ceramic nuclear fuel and oxide ceramics in hydrogen-protected sintering. Mo-50Re and TZM alloys serve as thermionic cathode structural components in high-power microwave tubes, operating at temperatures up to 1200℃.
Ceramic Processing and Powder Metallurgy - As heating elements for high-temperature hydrogen atmosphere furnaces, with long service life and operational reliability. Used as sintering boats and setters for uranium dioxide nuclear fuel sintering.
Scientific Research and Special Material Processing - For ultra-high temperature experimental equipment and special material heat treatment processes, supporting customized designs for specific requirements.
Customization
We provide comprehensive customization services to meet specific customer needs:
Material Selection: Recommend the most suitable materials based on application environment, including pure Mo, TZM, Mo-La alloy, or specially doped Mo wire
Dimensions and Shapes: Customize various complex geometries including U-shaped, W-shaped, spiral types, etc., to meet special furnace design requirements
Surface Treatment: Provide options such as electrolytic polishing, anti-oxidation coating (e.g., MoSi2 coating)
Connection Components: Customize special cold ends and aluminum spraying parts to ensure reliable connection with power supply systems
Our precision CNC machining capabilities ensure each custom element meets strict dimensional tolerances and performance requirements.
Support and Services
We are committed to providing comprehensive technical support and services to our customers:
Technical Consultation: Recommend the most suitable heating element materials and designs based on your process requirements
Installation Guidance: Provide detailed installation instructions and operational precautions to ensure optimal performance
Performance Optimization: Offer optimization suggestions based on actual usage conditions to extend element service life
Quality Assurance: Strictly implement ISO quality standards and material traceability systems
After-sales Support: Quickly respond to customer inquiries and provide professional solutions
