MoSi2 Heating Elements

High Purity Mosi2 Heating Elements, 1700 °C / 1800 °C Moly Disilicide Heating Elements Rod

Application: Widely used in research and production of glass, ceramic, refractory, metallurgy, steel-making, crystal, electronic parts, semiconductor material. The MoSi2 Heating Elements model including BR1700 (working temperature 1600℃) and BR1800 (working temperature 1700℃)

MoSi2 Heating Elements

MoSi2 Heating Elements Features:

  • The Mosi2 heater has the function of antioxidant and auto repair, and suitable for different kinds of continuous working during the oxygen atmosphere.
  • Molding by heat process and model size is standard, so we can produce special shapes and sizes according to customer requirements.
  • Adopt a special process for joint molding with fasten welding and strong impact resistance.
  • High density and excellent electrical conductivity, high heating rate, and low power consumption.
  • The old one and the new one could be used together.

MoSi2 Heating Elements Properties

1.Physical properties

Density Bending
Hardness Porosity Water
5.8g/cm3 350MPa 12.0GPa +/-5% 0.6 4% 4.5MPa.m1/2 650MPa


2.Chemical properties:

High temperature antioxidant property:
At a high temperature oxidizing atmosphere, a dense quartz SiO2 protect layer will be generated in the surface of the hot zone to prevent the element from further oxidation. When the temperature is higher than 1700C, the protection layer would be melt. Due to the effect of surface tension, quartz agglomerating into drops, and loses the protection. Then continue to use in the oxidizing atmosphere, the quartz protection layer again generate.

Note: the element can’t be used for a long time in the temperature range of 400C to 700C, otherwise it will be strongly oxidated and damaged

3.The influence of the different atmosphere

Atmosphere Max element temperature
1700 type 1800 type
Air 1700C 1800C
He Ar Ne 1650C 1750C
SO2 1600C 1700C
CO N2 1500C 1600C
(Wet) H2 1400C 1500C
(Dry) H2 1350C 1450C


Heating zone dia.


Cooling zone dia.


Heating zone length


Cooling zone length


Central distance


3mm 6mm 80-300mm 80-500mm 25mm
4mm 9mm 80-350mm 80-500mm 25mm
6mm 12mm 80-800mm 80-1000mm 25-60mm
7mm 12mm 80-800mm 80-1000mm 25-60mm
9mm 18mm 100-1200mm 100-2500mm 40-80mm
12mm 24mm 100-1500mm 100-1500mm 40-100mm
Note: 1.Special size is customizable.

2.Delivery time only need 3 days for normal size

Model: BR1700 (working temperature 1600℃) and BR1800(working temperature 1700℃)


Please confirm the following data before order our MoSi2 Heating Elements:

MoSi2 Heating Elements U type MoSi2 Heating Elements w type

MoSi2 Heating Elements L type


1. Type (U, W, L)

2. Diameter: D1, D2

3. Heating zone length: Le

4. Cooling zone length: Lu

5. The distance between two terminals: A



How to Extend MoSi2 Heating Elements Life

How to Replace MoSi2 Heating Elements (Silicon Molybdenum Rods)


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