# U Shape MoSi2 Heating Rod ## U-Type MoSi2 Heating Rod Description CVSIC U-Type Molybdenum Disilicide (MoSi2) heating element, shaped like a “U,” is crafted from high-purity MoSi2 via a high-temperature sintering process, with a density of 5.5-6.2 g/cm³ and a maximum operating temperature of 1850℃. Featuring two cold ends (Lu) and a U-shaped hot end (Le), the cold end diameter is twice the hot end’s, joined by welds, with an aluminum-coated cold end for low-resistance contact. Built for suspended installation, it delivers high-temperature and oxidation resistance, making it a reliable heating option for high-temperature applications in ceramics, electronics, lithium batteries, and furnaces. ## U-Type MoSi2 Rod Technical Parameters ## Technical Parameters | Diameter (d/c, mm) | Le(hot zone) Length | Lu(cold zone) Length | c(mm) | d(mm) | f(mm) | g(mm) | A(mm) Std/Min | | --- | --- | --- | --- | --- | --- | --- | --- | | 3/6 | Customizable | Customizable | 6 | 3 | 25 | 15 | 25/16 | | 4/9 | Customizable | Customizable | 9 | 4 | 25 | 15 | 25/19 | | 6/12 | Customizable | Customizable | 12 | 6 | 45 | 25 | 50/26 | | 9/18 | Customizable | Customizable | 18 | 9 | 75 | 30 | 60/38 | | 12/24 | Customizable | Customizable | 24 | 12 | 100 | 40 | 80/54 | Note: Dimensional tolerance ±5% (except c and d), Lu length 150-1000mm, Le length 150-1500mm, customizable. ### MoSi2 Heating Element Resistance versus Time ![mosi2 heating element resistance versus time](https://cvsicelement.com/wp-content/uploads/2025/08/MoSi2-Heating-Element-Resistance-versus-Time.webp) ## Maximum Temperature in Different Atmospheres | Atmosphere | Grade 1700 | Grade 1800 | Grade 1850 | | --- | --- | --- | --- | | NO2, CO2, O2, Air | 1700℃ | 1800℃ | 1850℃ | | He, Ar, Ne | 1650℃ | 1750℃ | 1800℃ | | SO2 | 1600℃ | 1700℃ | 1750℃ | | CO, N2 | 1500℃ | 1600℃ | 1700℃ | | Wet H2 | 1400℃ | 1500℃ | 1650℃ | | Dry H2 | 1350℃ | 1450℃ | 1600℃ | ## ## Resistivity Characteristics | Element Temperature (℃) | 1700 Type Resistivity (Ω·mm²/m) | 1800 Type Resistivity (Ω·mm²/m) | | --- | --- | --- | | 800 | 1.846 | 1.714 | | 900 | 2.071 | 1.918 | | 1000 | 2.285 | 2.142 | | 1100 | 2.499 | 2.366 | | 1200 | 2.734 | 2.601 | | 1300 | 2.968 | 2.836 | | 1400 | 3.223 | 3.050 | | 1500 | 3.488 | 3.315 | | 1600 | 3.743 | 3.570 | | 1700 | 4.029 | 3.805 | | 1800 | 4.316 | 4.060 | Note: Resistivity increases rapidly with temperature but remains stable over time, allowing new and old elements to be used together. ## Ordering Information When ordering U-Type MoSi2 heating elements, please provide the following parameters: - **Material Grade**: 1700/1800/1850 - **d/c**: Hot zone/cold zone diameter (mm) - **Le**: Hot zone length (mm) - **Lu**: Cold zone length (mm) - **A**: Shank spacing (mm) - **Example**: U-Type, 1800 grade, d/c=3/6mm, Le=140mm, Lu=125mm, A=25mm, denoted as: 1800/U-Type/3/6x140x125x25 ![u shape mosi2 heating element drawing](https://cvsicelement.com/wp-content/uploads/2025/08/U-Shape-MOSi2-Heating-Element-Drawing.webp) Note: Contact us for other specifications or customization. ## U-Type MoSi2 Heating Rod Connection Method - **Contact Surface Design:** The cold end features an aluminum coating, ensuring low-resistance contact for efficient conductivity. - **Electrical Connection:** Secure with flat aluminum braid and spring clips, compatible with 220-480V power; use an SCR voltage regulator (for precise temperature control) for optimal performance. Note: Ensure connectors fit tightly to the cold end, with connection end voltage <0.01V; select appropriate material grade (1700/1800/1850) based on atmosphere type. ## U-Type MoSi2 Heater Application Fields CVSIC U-Type MoSi2 heating elements are widely used in: - **High-Temperature Furnaces**: Supports ceramic sintering, glass manufacturing, and other high-temperature processes. - **Electronic Semiconductors**: Used for wafer sintering, diffusion furnaces, and encapsulation material heating. - **Lithium Battery Materials**: Facilitates high-temperature processing of battery anode and cathode materials. - **Rare Earth Phosphors and Precision Casting**: Provides high-temperature stability and uniform heating. - **Laboratory Furnaces**: Meets high-temperature experimental and material testing needs. ## U-Type MoSi2 Elements Product Advantages - **Ultra-High Temperature Resistance**: Operates up to 1850℃, ideal for extreme environments. - **High Oxidation Resistance**: High-density MoSi2 (5.5-6.2 g/cm³) offers excellent oxidation resistance and long lifespan. - **Quick and Uniform Heating**: 4% thermal elongation ensures even temperature fields and rapid heating. - **Corrosion Resistance**: Low porosity (7.4%) and water absorption (0.2%) make it suitable for various atmospheres (air, inert gases, etc.), enhancing its durability. - **Flexible Installation**: The U-Type design suits suspended installation, with aluminum-coated cold ends that simplify electrical connections. - **Stable Resistivity**: Resistivity remains constant over time, allowing mixed use of new and old elements. - **Global Service**: ISO-certified factory, 360-ton annual capacity, offers free samples, and 7-30 day delivery. ## U-Type MoSi2 Heating Rod Installation Method To ensure the performance and safety of U-Type MoSi2 heating elements, follow these steps: - **Inspect Element:** Check for cracks or damage before installation. - **Installation Position:** Place the hot end (Le) downward for suspended setup and insert cold ends (Lu) into the furnace, ensuring the transition zone is not exposed to avoid overheating damage. - **Spacing Design**: Maintain adequate distance from furnace bottom and walls (≥3 times hot end diameter) to prevent heat buildup. - **Fixing Device:** Use ceramic or heat-resistant steel clips to secure cold ends, avoiding mechanical stress. - **Power Connection:** Connect the cold end to power using a flat aluminum braid and spring clips, ensuring a solid connection. - **Preheating:** Gradually increase power during first use to avoid thermal shock. - **Regular Maintenance:** Inspect connectors and clips for loosening or corrosion; re-tighten screws after 2-3 hours of operation to address thermal relaxation. **Replacement Steps ** - Locate damaged element and prepare replacement set. - Disconnect power, remove aluminum braid and connecting screws, and clear refractory material and plugs. - Insert new element from furnace top, reconnect wires, and refill refractory material. - Gradually heat to ensure normal operation. *Note*: Installation and replacement should be done by professionals. Contact us for detailed guidance. ## U-Type MoSi2 Heating Rod Design Recommendations To optimize the performance of U-Type MoSi2 heating elements, follow these suggestions: - **Length Matching**: Ensure Lu (150-1000mm) and Le (150-1500mm) match furnace dimensions, avoiding hot end insertion into furnace walls. - **Shank Spacing Design**: Select A value (standard/minimum) based on diameter for stable installation and uniform heat distribution. - **Atmosphere Selection**: Choose 1700/1800/1850 grade based on atmosphere (e.g., O2, N2, H2), referring to the maximum temperature table. - **Spacing Design**: Maintain ≥3 times hot end diameter between element and furnace wall/material, and ≥4 times diameter for center-to-center spacing to optimize heat distribution. - **Temperature Control System**: Use a PID controller for precise temperature control to extend element lifespan. - **Cold End Protection**: Ensure the cold end aluminum coating is intact and connectors are tightly secured to avoid poor contact. ## Customization Services CVSIC offers flexible customization for U-Type MoSi2 heating elements: - **Size Customization**: Adjust hot/cold zone diameter, Lu/Le length, and shank spacing (A). - **Grade Selection**: Provide 1700/1800/1850 grades to suit different atmospheres and temperature needs. - **Special Coatings**: Offer oxidation-resistant coatings for enhanced performance in harsh environments. - **OEM/ODM Services**: Support bulk wholesale, free samples, and 7-30 day delivery. - **Technical Support**: Offer expert guidance and thermal simulation for selection and setup. Contact us for customized solutions or free samples! CVSIC is dedicated to providing top-notch U-Type MoSi2 heating elements to optimize ceramics, electronics, lithium batteries, and high-temperature processes. 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