What is u shape mosi2 heating element?
The u shape mosi2 heating element looks like the letter “U” in English, it is durable and reliable at high temperatures.
The U shaped mosi2 heating elements are most frequently used suspended with the bottom of the “U” down. The element consists of two cold ends (Lu) and a U-shaped hot section (Le).
The cold ends are twice the diameter of the hot section and are attached by a weld. The extremities of the cold ends are metallized with aluminum to provide a low-resistance contact surface to which the electrical connections are made with flat braided aluminum straps.
| Main Material | Molybdenum disilicide MoSi2 |
| Classification | Furnace heater |
| Key Selling Points | Long Service Life |
| Supply Ability | 5000 Piece / Pieces per Week for molybdenum disilicide heating element |
| Volume Density | 5.8~6.2g/cm³ |
| Bending Strength | 15-25kg/cm³ |
| Vickers Hardness | (HV)570kg/mm² |
| Porosity | 7.40% |
| Water absorption | 1.20% |
| Heating Elongation Rate | 4% |
| Packing | Cartoon box inside ,Polyfoam filled, Wooden box outside |
| After-sales Service Provided | Overseas service center available |
These mosi2 heating elements are available in two grades: 1700 for element temperatures up to 1700 ℃ and 1800 for element temperatures up to 1850 ℃.
Standard specification
Two-Shank Elements
Manufactured to industry established diameters and resistance values in the following diameters: 3/6, 4/9, 6/12, 9/18 and 12/24 .
Mosi2 heating element length:Lu length from 150 to 1000mm, Le length from 150 to 1500mm, customized is available .
Mosi2 heating element operation temperature: From 500C to 1750 ℃. Max temperature can up to 1900 ℃
Mosi2 heating element rod shape : U type; W type; straight type; L type.
Reference data for U shape mosi2 heating element
| Diameter(mm) φd(hot zone)/ φc (cold zone) | shape | length(mm) Le(hotzone)/Lu(cold zone) | a(mm) | g(mm) | f(mm) | h(mm) | n(mm) | ||
| Standard | Minimum | Standard | Minimum | ||||||
| 3/6 | U shape,L shape,W shape or customized | customized | 25 | 12 | 15 | 30 | 10 | 40 | 35 |
| 4/9 | U shape,L shape,W shape or customized | customized | 25 | 15 | 20 | 30 | 10 | 50 | 45 |
| 6/12 | U shape,L shape,W shape or customized | customize | 50 | 25 | 25 | 45 | 15 | 90 | 70 |
| 9/18 | U shape,L shape,W shape or customized | customized | 60 | 35 | 32 | 75 | 20 | 135 | 110 |
| 12/24 | U shape,L shape,W shape or customized | customized | 80 | 50 | 40 | 100 | 35 | ||
The installation of U shape mosi2 heating element
Two-shank elements with straight terminals are defined by
- Element grade 1700 Grade, 1800 Grade,1850 Grade, 1900 Grade or Super pure Type
- Heating zone diameter “d”, mm
- Terminal diameter “c”, mm
- Terminal length “Lu”, mm
- Heating zone length “Le”, mm
- Center distance between shanks “a”, mm
Example: 1800 Grade,9/18, Lu = 320 mm
Sizes Available
Le = 510 mm
A=50mm
As shown below：
Resistance coefficient of mosi2 heating element
| Element temperature (℃) | Type 1700 resistivity (Ω·mm2/m) | Type 1800 resistivity (Ω·mm2/m) |
| 20 | 0.306 | 0.286 |
| 100 | 0.448 | 0.398 |
| 200 | 0.622 | 0.550 |
| 300 | 0.816 | 0.724 |
| 400 | 1.020 | 0.907 |
| 500 | 1.224 | 1.102 |
| 600 | 1.418 | 1.306 |
| 700 | 1.632 | 1.509 |
| 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 |
The assembly of U shape mosi2 heating element
- Transition section (g) should be inserted inside the furnace, to avoid the case that heat can not emit and resulting in damage of the transition section.
- When installing, it is necessary to keep certain distance between the U shape mosi2 heating element and furnace bottom (h).
- Make sure a reasonable distance between the U shape mosi2 heating element and furnace wall.
- The suggest surface load of 1700 type U shape mosi2 heating element and furnace wall under 1300 C furnace temperature is below 13. 5w/cm3. The suggest surface load of 1800 type U shape mosi2 heating element under 1600℃ furnace temperature is below 11. 5w/cm2. And the suggest surface load of 1850 type products under 1720 C furnace temperature is below 12 w/cm2.
