Molybdenum disilicide MoSi2 heating elements are for industrial and laboratory furnaces. As ceramic-based resistant element, the MoSi2 heater produced furnace temperature to 1800°C. It include 1700, 1800 and 1900 Grade. These custom heating elements provide longevity and reliability at a high temperature.
MoSi2 heating element is a type of resistance heating element composed of high purity Molybdenum Disilicide. When heated to a high temperature in an oxidizing atmosphere, a layer of compact quartz glass forms on the surface of the element which withstands oxidation. In an oxidizing atmosphere, its maximum temperature can reach 1850℃, and its applicable temperature is 500~1750℃. MoSi2 heater can be widely used as heating elements in high temperature furnaces for a variety of industries including ceramics, magnets, glass, metallurgy, refractory and many others. We named our MoSi2 heating elements as HT Super.
HT Super 1900 is the latest super quality element researched and developed by us, which adopts high purity Molybdenum and Silicon powder and with whole process anti-oxidation. HT Super 1900 has the advantages of higher service temperature, and higher tensile strength. Its maximum service temperature is 1850℃ and it can sustain furnace temperatures of 1800℃. For more details of HT Super 1900, do not hesitate to contact us.
Chemical Properties of molybdenum disilicide heating elements
MoSi2 Heating Element has the ability to withstand oxidation at high temperatures. This is due to the formation of a thin and adhesive protective layer of quartz glass (SiO2) on the surface. When the element temperature over 1700℃, SiO2 protective layer which melting point is 1710℃ was fused, and because of the surface tension, it fused into drops, which is useless. However, when MoSi2 heater continue working in oxidizing atmospheres, the SiO2 protective layer is spontaneously rebuilt.
Notice: It is not good to use Molybdenum Disilicide Heating Element for Long-term within a range of 400-700℃, otherwise the element will be powdered by the strong low temperature oxidation.
Temperature of MoSi2 heating elements in Different atmosphere
Atmosphere | TC1700 | TC1800 | TC1850 | TC1900 |
Air | 1700 | 1800 | 1830 | 1850 |
Nitrogen | 1600 | 1700 | 1700 | 1700 |
Ar Ne Argon, Helium | 1600 | 1700 | 1700 | 1700 |
Dry Hydrogen (dew point)-80℃ | 1150 | 1150 | 1150 | 1150 |
Wet Hydrogen (dew point)-20℃ | 1450 | 1450 | 1450 | 1450 |
Exogas(e.g. 10% CO2, 50% CO, 15%H2) | 1600 | 1700 | 1700 | 1700 |
Exogas(e.g. 40% CO2, 20% CO) | 1400 | 1450 | 1450 | 1450 |
Cracked and partially burnt ammonia（8%H2) | 1400 | 1450 | 1450 | 1450 |
Physical properties of molybdenum disilicide heating elements
Bulk Density-g/cm3 | Bending Strength-MPa | Hardness-GPa | Compression Strength-MPa | Water Absorption-% | Heated Elongation-% |
5.8±0.1 | 450 | 11 | ＞1500 | ≤0.2% | 4 |
Advantage of HT MoSi2 heating elements
1. Product has the capabilities to resistance to oxidation and automatically repair, suitable for continued using in any kinds of oxidizing atmospheres.
2. Product is shaped in hot-working process, which keeps the base material in good tenacity and plasticity at high temperature. The geometrical figure, standard and dimension is canonical, may produce any special shape and any dimension to meet the customer requirement.
3. Because of the special technology, welding spot is fast and shock resistance, which dramatically reduced the damaged probability of welding spot by electric current, as well as transit and installation.
4. High density of HT MoSi2 heating elements increases its electrical conductivity. The characters of faster warming and power consumption low, which reduce production cost.
5. Good appearance quality and tenacity, high mechanical strength.
6. Adopt special technology, heaters come with compact protective layer, excellent performance in no-oxidizing atmosphere electric furnaces.
Standard diameter of MoSi2 heating elements
Type | Heating Zone Diameter | Terminal Diameter | Standard Shank Distance |
Diameter of MoSi2 heater (hot zone) | Dia of MoSi2 heating elements (hot zone) | A Distance of between 2 shanks | |
2/4 | 2 mm ( 0.08″ ) | 4 mm ( 0.16″ ) | 20, 25 and 30 mm |
3/6 | 3 mm ( 0.12″ ) | 6 mm ( 0.24″ ) | 20, 25, 30, 35 and 40 mm |
4/9 | 4 mm ( 0.16″ ) | 9 mm ( 0.35″ ) | 20, 25, 30, 35 and 40 mm |
6/12 | 6 mm ( 0.24″ ) | 12 mm ( 0.47″ ) | 30, 35, 40, 45 and 50 mm |
9/18 | 9 mm ( 0.35″ ) | 18 mm ( 0.71″ ) | 40, 45, 50, 55 and 60 mm |
12/24 | 12 mm ( 0.47″ ) | 24 mm ( 0.95″ ) | 60 mm – 100mm |
Molybdenum disilicide MoSi2 heating elements are for industrial and laboratory furnaces. As ceramic-based resistant element, the MoSi2 heater produced furnace temperature to 1800°C. It include 1700, 1800 and 1900 Grade. These custom heating elements provide longevity and reliability at a high temperature.
MoSi2 heating element is a type of resistance heating element composed of high purity Molybdenum Disilicide. When heated to a high temperature in an oxidizing atmosphere, a layer of compact quartz glass forms on the surface of the element which withstands oxidation. In an oxidizing atmosphere, its maximum temperature can reach 1850℃, and its applicable temperature is 500~1750℃. MoSi2 heater can be widely used as heating elements in high temperature furnaces for a variety of industries including ceramics, magnets, glass, metallurgy, refractory and many others. We named our MoSi2 heating elements as HT Super.
HT Super 1900 is the latest super quality element researched and developed by us, which adopts high purity Molybdenum and Silicon powder and with whole process anti-oxidation. HT Super 1900 has the advantages of higher service temperature, and higher tensile strength. Its maximum service temperature is 1850℃ and it can sustain furnace temperatures of 1800℃. For more details of HT Super 1900, do not hesitate to contact us.
Chemical Properties of molybdenum disilicide heating elements
MoSi2 Heating Element has the ability to withstand oxidation at high temperatures. This is due to the formation of a thin and adhesive protective layer of quartz glass (SiO2) on the surface. When the element temperature over 1700℃, SiO2 protective layer which melting point is 1710℃ was fused, and because of the surface tension, it fused into drops, which is useless. However, when MoSi2 heater continue working in oxidizing atmospheres, the SiO2 protective layer is spontaneously rebuilt.
Notice: It is not good to use Molybdenum Disilicide Heating Element for Long-term within a range of 400-700℃, otherwise the element will be powdered by the strong low temperature oxidation.
Temperature of MoSi2 heating elements in Different atmosphere
Atmosphere | TC1700 | TC1800 | TC1850 | TC1900 |
Air | 1700 | 1800 | 1830 | 1850 |
Nitrogen | 1600 | 1700 | 1700 | 1700 |
Ar Ne Argon, Helium | 1600 | 1700 | 1700 | 1700 |
Dry Hydrogen (dew point)-80℃ | 1150 | 1150 | 1150 | 1150 |
Wet Hydrogen (dew point)-20℃ | 1450 | 1450 | 1450 | 1450 |
Exogas(e.g. 10% CO2, 50% CO, 15%H2) | 1600 | 1700 | 1700 | 1700 |
Exogas(e.g. 40% CO2, 20% CO) | 1400 | 1450 | 1450 | 1450 |
Cracked and partially burnt ammonia（8%H2) | 1400 | 1450 | 1450 | 1450 |
Physical properties of molybdenum disilicide heating elements
Bulk Density-g/cm3 | Bending Strength-MPa | Hardness-GPa | Compression Strength-MPa | Water Absorption-% | Heated Elongation-% |
5.8±0.1 | 450 | 11 | ＞1500 | ≤0.2% | 4 |
Advantage of HT MoSi2 heating elements
1. Product has the capabilities to resistance to oxidation and automatically repair, suitable for continued using in any kinds of oxidizing atmospheres.
2. Product is shaped in hot-working process, which keeps the base material in good tenacity and plasticity at high temperature. The geometrical figure, standard and dimension is canonical, may produce any special shape and any dimension to meet the customer requirement.
3. Because of the special technology, welding spot is fast and shock resistance, which dramatically reduced the damaged probability of welding spot by electric current, as well as transit and installation.
4. High density of HT MoSi2 heating elements increases its electrical conductivity. The characters of faster warming and power consumption low, which reduce production cost.
5. Good appearance quality and tenacity, high mechanical strength.
6. Adopt special technology, heaters come with compact protective layer, excellent performance in no-oxidizing atmosphere electric furnaces.
Standard diameter of MoSi2 heating elements
Type | Heating Zone Diameter | Terminal Diameter | Standard Shank Distance |
Diameter of MoSi2 heater (hot zone) | Dia of MoSi2 heating elements (hot zone) | A Distance of between 2 shanks | |
2/4 | 2 mm ( 0.08″ ) | 4 mm ( 0.16″ ) | 20, 25 and 30 mm |
3/6 | 3 mm ( 0.12″ ) | 6 mm ( 0.24″ ) | 20, 25, 30, 35 and 40 mm |
4/9 | 4 mm ( 0.16″ ) | 9 mm ( 0.35″ ) | 20, 25, 30, 35 and 40 mm |
6/12 | 6 mm ( 0.24″ ) | 12 mm ( 0.47″ ) | 30, 35, 40, 45 and 50 mm |
9/18 | 9 mm ( 0.35″ ) | 18 mm ( 0.71″ ) | 40, 45, 50, 55 and 60 mm |
12/24 | 12 mm ( 0.47″ ) | 24 mm ( 0.95″ ) | 60 mm – 100mm |
