Core Value
The U M L Shape MoSi2 Heating Elements for 1700C 1800C Furnace （Molybdenum Disilicide Heating Elements）are engineered for ultra-high temperature heating applications in high-purity laboratory muffle furnaces, dental sintering ovens, glass melting tanks, and industrial ceramic kilns. Manufactured from high-density, high-purity Molybdenum Disilicide (MoSi2) powder through precision hot-extrusion and sintering processes, these elements form a protective, continuous Quartz Glass (SiO2) Surface Film when operating in oxidizing environments above 900°C. This self-healing glass layer shields the internal MoSi2 matrix from active oxidation, enabling stable continuous thermal performance at temperatures from 1700°C to 1800°C (3092°F to 3272°F).
Available in standard U-Shape (2-shank), M-Shape (4-shank), L-Shape (90° right-angle bends), and custom multi-bent geometries, these MoSi2 elements feature thick cold-end terminals (Lu) coupled to thinner hot-zone heating shanks (Le). This dimensional contrast minimizes electrical power loss at furnace wall penetrations while concentrating thermal radiation inside the chamber. Unlike metallic heating elements, MoSi2 resistance remains virtually constant over long-term thermal cycling (no resistance aging), allowing old and new elements to be connected in series without unbalancing power. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE and UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS for ultimate dimensional accuracy and high-temperature structural reliability.
- ✓ Ultra-High Temperature Operation: Standard 1700°C grade (MoSi2 1700) and premium 1800°C grade (MoSi2 1800) for extreme thermal processing.
- ✓ Self-Healing Quartz Protective Film: Automatically regenerates a protective SiO2 glass layer above 900°C, extending element lifespan in oxidizing atmospheres.
- ✓ Zero Electrical Resistance Aging: Electrical resistance does not increase over prolonged operational cycles; new and used elements can be mixed freely in the same circuit.
- ✓ Versatile Structural Geometries: U-Shape, M-Shape, L-Shape, and W-Shape configurations fit roof-suspended, wall-mounted, or floor-recessed furnace layouts.
- ✓ Rapid Heating Capability: Withstands high surface watt densities, enabling accelerated heating ramps and reduced furnace cycle times.
- ✓ Low Cold-End Power Loss: Thick cold terminals (Lu) reduce electrical resistance and operating temperature at wall penetrations, protecting terminal clamps.
- ✓ Reliable Quality: 30+ YEARS MANUFACTURING EXPERIENCE guarantees precise element alignment, uniform diameter transitions, and dense material purity.
- ✓ Quality Assured: UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS including hot-state bend testing, density checks, and cold-resistance calibration.
- ✓ Global Compliance: CE, RoHS, ISO 9001, and ISO 14001 certified.
Technical Specifications & Performance Data
| Parameter | Standard Value | Customizable Range | Notes |
| Material Grade | MoSi2 1700 / MoSi2 1800 | High-Purity Super MoSi2 | Grade selected based on maximum target chamber temperature |
| Max Working Temp | 1700°C (3092°F) / 1800°C (3272°F) | Continuous operation in air | Requires $\text{SiO}_2$ film protection in oxidizing environments |
| Element Shapes | U-Shape / M-Shape / L-Shape | W-Shape, Right-Angle, Custom Bends | Precision bent to fit muffle and tube furnace chambers |
| Hot Zone Dia. (d) | Ø 3 mm / Ø 6 mm / Ø 9 mm / Ø 12 mm | Ø 3 mm to Ø 12 mm | Thin hot shank ($\text{Le}$) generates concentrated heat |
| Cold End Dia. (D) | Ø 6 mm / Ø 12 mm / Ø 18 mm / Ø 24 mm | Ø 6 mm to Ø 24 mm | Thick cold terminal ($\text{Lu}$) reduces heat loss at wall |
| Shank Spacing (A) | 25 mm – 80 mm | Built to furnace roof slot pitch | Precision spacing prevents shank-to-shank arcing |
| Density | 5.5 g/cm³ – 5.6 g/cm³ | High-density sintered structure | High mechanical strength at room temperature |
| Surface Load | 10 W/cm² – 20 W/cm² | Dependent on operating temp | High watt density accelerates furnace warm-up |
| Terminal Clamps | Heavy-Duty Aluminum Woven Straps | Stainless Steel / Copper Clamps | Ensures low contact resistance at cold ends |
| Warranty | 1 Year Standard | Extended coverage available | Guaranteed against manufacturing defects |
Industrial Applications & Solutions
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High-Purity Dental Zirconia Sintering: Fast-cycling M-Shape and U-Shape MoSi2 elements for dental CAD/CAM sintering furnaces operating at 1550°C–1600°C.
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Advanced Technical Ceramics: High-temperature sintering of alumina, zirconia, silicon nitride, and electro-ceramics in muffle kilns.
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Glass Melting & Fiber Production: L-Shape and U-Shape elements for high-purity glass melting pots, optical glass furnaces, and fiber drawing towers.
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Semiconductor & Crystal Growth: Clean, non-contaminating thermal zones for silicon wafer oxidation, annealing, and crystal pulling furnaces.
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Laboratory & University R&D: High-precision thermal testing inside 1700°C and 1800°C benchtop box and tube muffle furnaces.
HT-Heater vs Standard Market MoSi2 Elements
| Feature | HT-Heater MoSi2 Elements | Standard Market Elements | Your Advantage |
| Material Purity | High-Purity Ultra-Dense MoSi2 Matrix | Recycled / Porous MoSi2 Blend | High structural strength, zero sagging or premature snapping |
| Quartz Layer Formation | Fast-Forming Uniform SiO2 Film | Irregular / Flaking Oxide Film | Superior oxidation resistance, longer lifespan at 1700°C+ |
| Resistance Stability | Zero Resistance Aging (Constant R) | High Resistance Drift | New elements can be installed with old ones without unbalancing power |
| Welded Transition Joint | Seamless Hot-to-Cold Weld Zone | Brittle / Bulky Weld Joint | Eliminates local overheating and joint failure at wall slots |
| Manufacturing Exp. | 30+ YEARS EXPERIENCE | Unverified Workshops | Engineered bending radius and shank parallelism |
| Quality Assurance | MULTIPLE RIGOROUS QUALITY CHECKS | Basic Visual Check Only | ZERO DEFECT DELIVERY |
Installation & Integration Guidelines
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Fragility Precaution: MoSi2 elements are brittle at room temperature. Handle with extreme care during unpacking, measurement, and mounting to prevent mechanical fracture.
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Vertical Roof Suspension: MoSi2 elements soften and become plastic above 1350°C. Suspend elements vertically from the furnace roof using specialized ceramic support blocks and spring clips to prevent horizontal sagging.
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Pest Oxidation Avoidance (400°C–700°C): Avoid prolonged continuous operation within the 400°C to 700°C temperature window, as low-temperature oxidation (“pesting”) can break down the MoSi2 matrix. Pass through this range rapidly during initial ramp-up.
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Flexible Aluminum Braided Straps: Connect cold-end terminals ($\text{Lu}$) to power busbars using flexible aluminum woven straps and heavy-duty clamps. Never rigid-bolt terminals directly to solid busbars, as thermal expansion will snap the element.
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Shank Spacing Clearance: Ensure heating shanks retain adequate clearance from furnace refractory walls and adjacent elements to prevent electrical arcing and localized overheating.
Customer Success Stories
Case 1:
Dental Furnace OEM (Germany)
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Application: High-speed zirconia crown sintering furnaces operating up to 1650°C.
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Challenge: Element breakage and thermal discoloration on crowns caused by impurities in lower-grade MoSi2 heating elements.
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Solution: Custom M-Shape High-Purity MoSi2 1800 Heating Elements (Ø 3/6 mm).
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Results: DISCOLORATION REJECTS DROPPED TO 0%. “The ceramic purity of HT-Heater’s MoSi2 elements is exceptional. Dental crowns come out pristine. HT-Heater UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS, and element geometry is perfectly consistent.”
Case 2:
Advanced Materials Research Lab (USA)
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Application: High-temperature atmosphere box furnace operating continuously at 1750°C.
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Challenge: Frequent element burnout at the hot-to-cold weld joint during rapid thermal cycles.
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Solution: U-Shape MoSi2 1800 Heating Elements with reinforced transition weld joints.
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Results: ELEMENT LIFESPAN EXTENDED BY 2X. “30+ YEARS MANUFACTURING EXPERIENCE shows in their element welding. The transition joint between hot and cold shanks handles 1750°C thermal shock effortlessly.”
Pricing & Procurement Options
- Standard Production: MOQ 2 pieces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensuring exact dimensional tolerances and density repeatability across production runs. Tiered volume discounts available for 20+ unit orders.
- Lead Times: Standard Catalog Dimensions (U-Shape 3/6, 6/12, 9/18, 12/24): In stock, 3-5 days. Custom M-Shape, L-Shape, or Special Shank Dimensions: 7-10 days. Express air dispatch with specialized wooden crating.
- Global Logistics: Suspended inside custom high-density foam slots within sturdy wooden export crates to guarantee zero transit breakage.
- Sample Orders: Custom sample elements produced upon CAD drawing approval. Every shipment UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS prior to dispatch.
Global Certifications & Compliance
- CE Marking
Fully compliant with European safety and environmental standards. - LVD Compliance
Low Voltage Directive tested for continuous thermal load safety. - RoHS Compliant
Constructed using environmentally safe, lead-controlled brass alloys. - ISO 9001
Certified quality control covering CNC machining, coil pressing, and electrical testing.
Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.
Comprehensive After-Sales Support
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- Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.
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Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.
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Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.
Ready to Optimize Your Injection Molding?
Next Steps:
- 📧 Request Custom Quote – Send your nozzle dimensions, wattage, voltage, and HT-CLW-450 drawing requirements.
- 🔧 Free Design Consultation – Work with our thermal engineers to optimize heat distribution and lead insulation.
- 📦 Order Test Samples – Evaluate thermal performance on your injection molding machine.
- 📞 Contact Hot Runner Experts – Response within 2 hours
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